diff --git a/.circleci/config.yml b/.circleci/config.yml
index a69675b62..08af0c75e 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -28,7 +28,7 @@ commands:
 
 jobs:
   lint:
-    working_directory: /go/src/github.com/CityOfZion/neo-go
+    working_directory: /go/src/github.com/nspcc-dev/neo-go
     executor: go1_13
     steps:
       - checkout
@@ -40,7 +40,7 @@ jobs:
             golint -set_exit_status ./...
 
   vet:
-    working_directory: /go/src/github.com/CityOfZion/neo-go
+    working_directory: /go/src/github.com/nspcc-dev/neo-go
     executor: go1_13
     steps:
       - checkout
@@ -50,7 +50,7 @@ jobs:
           command: go vet ./...
 
   test_1_12:
-    working_directory: /go/src/github.com/CityOfZion/neo-go
+    working_directory: /go/src/github.com/nspcc-dev/neo-go
     executor: go1_12
     steps:
       - checkout
@@ -60,7 +60,7 @@ jobs:
       - run: go test -v -race ./...
 
   test_1_13:
-    working_directory: /go/src/github.com/CityOfZion/neo-go
+    working_directory: /go/src/github.com/nspcc-dev/neo-go
     executor: go1_13
     steps:
       - checkout
@@ -72,7 +72,7 @@ jobs:
           file: coverage.txt
 
   build_cli:
-    working_directory: /go/src/github.com/CityOfZion/neo-go
+    working_directory: /go/src/github.com/nspcc-dev/neo-go
     executor: go1_12
     steps:
       - checkout
@@ -83,7 +83,7 @@ jobs:
           destination: /
 
   build_image:
-    working_directory: /go/src/github.com/CityOfZion/neo-go
+    working_directory: /go/src/github.com/nspcc-dev/neo-go
     executor: go1_12
     docker:
       - image: golang:1-alpine
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 85946ec5c..db72a29dd 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -3,8 +3,8 @@
 First, thank you for contributing! We love and encourage pull requests from everyone. Please
 follow the guidelines:
 
-1. Check the open [issues](https://github.com/CityOfZion/neo-go/issues) and 
-[pull requests](https://github.com/CityOfZion/neo-go/pulls) for existing discussions.
+1. Check the open [issues](https://github.com/nspcc-dev/neo-go/issues) and
+[pull requests](https://github.com/nspcc-dev/neo-go/pulls) for existing discussions.
 1. Open an issue first, to discuss a new feature or enhancement.
 1. Write tests, and make sure the test suite passes locally and on CI.
 1. Open a pull request, and reference the relevant issue(s).
diff --git a/cli/main.go b/cli/main.go
index 6e2817ac9..45dbe7bff 100644
--- a/cli/main.go
+++ b/cli/main.go
@@ -3,11 +3,11 @@ package main
 import (
 	"os"
 
-	"github.com/CityOfZion/neo-go/cli/server"
-	"github.com/CityOfZion/neo-go/cli/smartcontract"
-	"github.com/CityOfZion/neo-go/cli/vm"
-	"github.com/CityOfZion/neo-go/cli/wallet"
-	"github.com/CityOfZion/neo-go/config"
+	"github.com/nspcc-dev/neo-go/cli/server"
+	"github.com/nspcc-dev/neo-go/cli/smartcontract"
+	"github.com/nspcc-dev/neo-go/cli/vm"
+	"github.com/nspcc-dev/neo-go/cli/wallet"
+	"github.com/nspcc-dev/neo-go/config"
 	"github.com/urfave/cli"
 )
 
diff --git a/cli/server/dump.go b/cli/server/dump.go
index 37865d3ab..0e38fa74e 100644
--- a/cli/server/dump.go
+++ b/cli/server/dump.go
@@ -7,8 +7,8 @@ import (
 	"os"
 	"path/filepath"
 
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 type dump []interface{}
diff --git a/cli/server/server.go b/cli/server/server.go
index f2bc41edd..259a57692 100644
--- a/cli/server/server.go
+++ b/cli/server/server.go
@@ -6,15 +6,15 @@ import (
 	"os"
 	"os/signal"
 
-	"github.com/CityOfZion/neo-go/config"
-	"github.com/CityOfZion/neo-go/pkg/core"
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/network"
-	"github.com/CityOfZion/neo-go/pkg/network/metrics"
-	"github.com/CityOfZion/neo-go/pkg/rpc/server"
+	"github.com/nspcc-dev/neo-go/config"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/network"
+	"github.com/nspcc-dev/neo-go/pkg/network/metrics"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/server"
 	"github.com/pkg/errors"
 	"github.com/urfave/cli"
 	"go.uber.org/zap"
diff --git a/cli/smartcontract/smart_contract.go b/cli/smartcontract/smart_contract.go
index aec4f901f..33278122f 100644
--- a/cli/smartcontract/smart_contract.go
+++ b/cli/smartcontract/smart_contract.go
@@ -11,16 +11,16 @@ import (
 	"os"
 	"path/filepath"
 
-	"github.com/CityOfZion/neo-go/pkg/compiler"
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/rpc/client"
-	"github.com/CityOfZion/neo-go/pkg/rpc/request"
-	"github.com/CityOfZion/neo-go/pkg/rpc/response/result"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm"
 	"github.com/go-yaml/yaml"
+	"github.com/nspcc-dev/neo-go/pkg/compiler"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/client"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/request"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 	"github.com/pkg/errors"
 	"github.com/urfave/cli"
 )
@@ -53,7 +53,7 @@ const (
 	// %s is parsed to be the smartContractName
 	smartContractTmpl = `package %s
 
-import "github.com/CityOfZion/neo-go/pkg/interop/runtime"
+import "github.com/nspcc-dev/neo-go/pkg/interop/runtime"
 
 func Main(op string, args []interface{}) {
     runtime.Notify("Hello world!")
diff --git a/cli/vm/vm.go b/cli/vm/vm.go
index 3dab28638..5ea7c68a3 100644
--- a/cli/vm/vm.go
+++ b/cli/vm/vm.go
@@ -1,7 +1,7 @@
 package vm
 
 import (
-	vmcli "github.com/CityOfZion/neo-go/pkg/vm/cli"
+	vmcli "github.com/nspcc-dev/neo-go/pkg/vm/cli"
 	"github.com/urfave/cli"
 )
 
diff --git a/cli/wallet/wallet.go b/cli/wallet/wallet.go
index e677c6959..41c043d90 100644
--- a/cli/wallet/wallet.go
+++ b/cli/wallet/wallet.go
@@ -9,14 +9,14 @@ import (
 	"strings"
 	"syscall"
 
-	"github.com/CityOfZion/neo-go/pkg/core"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/rpc/client"
-	"github.com/CityOfZion/neo-go/pkg/rpc/request"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/wallet"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/client"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/request"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/wallet"
 	"github.com/urfave/cli"
 	"golang.org/x/crypto/ssh/terminal"
 )
diff --git a/config/config.go b/config/config.go
index 8f6658e11..a57464778 100644
--- a/config/config.go
+++ b/config/config.go
@@ -6,11 +6,11 @@ import (
 	"os"
 	"time"
 
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/network/metrics"
-	"github.com/CityOfZion/neo-go/pkg/util"
 	"github.com/go-yaml/yaml"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/network/metrics"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/pkg/errors"
 )
 
diff --git a/docs/compiler.md b/docs/compiler.md
index 7d44bfa67..3887028d9 100644
--- a/docs/compiler.md
+++ b/docs/compiler.md
@@ -146,8 +146,8 @@ Some examples are provided in the [examples directory](https://github.com/nspcc-
 package mycontract
 
 import (
-    "github.com/CityOfZion/neo-go/pkg/interop/runtime"
-    "github.com/CityOfZion/neo-go/pkg/interop/util"
+    "github.com/nspcc-dev/neo-go/pkg/interop/runtime"
+    "github.com/nspcc-dev/neo-go/pkg/interop/util"
 )
 
 var owner = util.FromAddress("AJX1jGfj3qPBbpAKjY527nPbnrnvSx9nCg") 
@@ -170,8 +170,8 @@ func Main() bool {
 package mytoken
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/interop/runtime"
-	"github.com/CityOfZion/neo-go/pkg/interop/storage"
+	"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
+	"github.com/nspcc-dev/neo-go/pkg/interop/storage"
 )
 
 var owner = util.FromAddress("AJX1jGfj3qPBbpAKjY527nPbnrnvSx9nCg") 
diff --git a/docs/vm.md b/docs/vm.md
index 5871a6247..c9454c3b5 100644
--- a/docs/vm.md
+++ b/docs/vm.md
@@ -117,7 +117,7 @@ You can invoke smart contracts with arguments. Take the following ***roll the di
 ```
 package rollthedice
 
-import "github.com/CityOfZion/neo-go/pkg/interop/runtime"
+import "github.com/nspcc-dev/neo-go/pkg/interop/runtime"
 
 func Main(method string, args []interface{}) int {
     if method == "rollDice" {
diff --git a/examples/engine/engine.go b/examples/engine/engine.go
index b2d3fdfe5..d5a914c68 100644
--- a/examples/engine/engine.go
+++ b/examples/engine/engine.go
@@ -1,8 +1,8 @@
 package enginecontract
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/interop/engine"
-	"github.com/CityOfZion/neo-go/pkg/interop/runtime"
+	"github.com/nspcc-dev/neo-go/pkg/interop/engine"
+	"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
 )
 
 // Main is that famous Main() function, you know.
diff --git a/examples/iterator/iterator.go b/examples/iterator/iterator.go
index 593ab168e..96ccf73f1 100644
--- a/examples/iterator/iterator.go
+++ b/examples/iterator/iterator.go
@@ -1,9 +1,9 @@
 package iteratorcontract
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/interop/iterator"
-	"github.com/CityOfZion/neo-go/pkg/interop/runtime"
-	"github.com/CityOfZion/neo-go/pkg/interop/storage"
+	"github.com/nspcc-dev/neo-go/pkg/interop/iterator"
+	"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
+	"github.com/nspcc-dev/neo-go/pkg/interop/storage"
 )
 
 // Main is Main(), really.
diff --git a/examples/runtime/runtime.go b/examples/runtime/runtime.go
index 8b935854a..9bee81a66 100644
--- a/examples/runtime/runtime.go
+++ b/examples/runtime/runtime.go
@@ -1,8 +1,8 @@
 package runtimecontract
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/interop/runtime"
-	"github.com/CityOfZion/neo-go/pkg/interop/util"
+	"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
+	"github.com/nspcc-dev/neo-go/pkg/interop/util"
 )
 
 // Check if the invoker of the contract is the specified owner
diff --git a/examples/storage/storage.go b/examples/storage/storage.go
index c12f5a5c9..72450fd36 100644
--- a/examples/storage/storage.go
+++ b/examples/storage/storage.go
@@ -1,7 +1,7 @@
 package storagecontract
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/interop/storage"
+	"github.com/nspcc-dev/neo-go/pkg/interop/storage"
 )
 
 // Main is a very useful function.
diff --git a/examples/token-sale/token_sale.go b/examples/token-sale/token_sale.go
index 2dd8edb0f..a6276f121 100644
--- a/examples/token-sale/token_sale.go
+++ b/examples/token-sale/token_sale.go
@@ -1,9 +1,9 @@
 package tokensale
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/interop/runtime"
-	"github.com/CityOfZion/neo-go/pkg/interop/storage"
-	"github.com/CityOfZion/neo-go/pkg/interop/util"
+	"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
+	"github.com/nspcc-dev/neo-go/pkg/interop/storage"
+	"github.com/nspcc-dev/neo-go/pkg/interop/util"
 )
 
 const (
diff --git a/examples/token/nep5/nep5.go b/examples/token/nep5/nep5.go
index e4bc2267e..f16abd38c 100644
--- a/examples/token/nep5/nep5.go
+++ b/examples/token/nep5/nep5.go
@@ -1,10 +1,10 @@
 package nep5
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/interop/engine"
-	"github.com/CityOfZion/neo-go/pkg/interop/runtime"
-	"github.com/CityOfZion/neo-go/pkg/interop/storage"
-	"github.com/CityOfZion/neo-go/pkg/interop/util"
+	"github.com/nspcc-dev/neo-go/pkg/interop/engine"
+	"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
+	"github.com/nspcc-dev/neo-go/pkg/interop/storage"
+	"github.com/nspcc-dev/neo-go/pkg/interop/util"
 )
 
 // Token holds all token info
diff --git a/examples/token/token.go b/examples/token/token.go
index b8111c55d..51f045f81 100644
--- a/examples/token/token.go
+++ b/examples/token/token.go
@@ -1,10 +1,10 @@
 package tokencontract
 
 import (
-	"github.com/CityOfZion/neo-go/examples/token/nep5"
+	"github.com/nspcc-dev/neo-go/examples/token/nep5"
 
-	"github.com/CityOfZion/neo-go/pkg/interop/storage"
-	"github.com/CityOfZion/neo-go/pkg/interop/util"
+	"github.com/nspcc-dev/neo-go/pkg/interop/storage"
+	"github.com/nspcc-dev/neo-go/pkg/interop/util"
 )
 
 const (
diff --git a/go.mod b/go.mod
index 95e9ff398..ad0325c98 100644
--- a/go.mod
+++ b/go.mod
@@ -1,4 +1,4 @@
-module github.com/CityOfZion/neo-go
+module github.com/nspcc-dev/neo-go
 
 require (
 	github.com/Workiva/go-datastructures v1.0.50
diff --git a/go.sum b/go.sum
index 6ede96e81..37019dd1e 100644
--- a/go.sum
+++ b/go.sum
@@ -1,7 +1,7 @@
-github.com/CityOfZion/neo-go v0.62.1-pre.0.20191114145240-e740fbe708f8/go.mod h1:MJCkWUBhi9pn/CrYO1Q3P687y2KeahrOPS9BD9LDGb0=
-github.com/CityOfZion/neo-go v0.70.1-pre.0.20191209120015-fccb0085941e/go.mod h1:0enZl0az8xA6PVkwzEOwPWVJGqlt/GO4hA4kmQ5Xzig=
-github.com/CityOfZion/neo-go v0.70.1-pre.0.20191212173117-32ac01130d4c/go.mod h1:JtlHfeqLywZLswKIKFnAp+yzezY4Dji9qlfQKB2OD/I=
-github.com/CityOfZion/neo-go v0.71.1-pre.0.20200129171427-f773ec69fb84/go.mod h1:FLI526IrRWHmcsO+mHsCbj64pJZhwQFTLJZu+A4PGOA=
+github.com/nspcc-dev/neo-go v0.62.1-pre.0.20191114145240-e740fbe708f8/go.mod h1:MJCkWUBhi9pn/CrYO1Q3P687y2KeahrOPS9BD9LDGb0=
+github.com/nspcc-dev/neo-go v0.70.1-pre.0.20191209120015-fccb0085941e/go.mod h1:0enZl0az8xA6PVkwzEOwPWVJGqlt/GO4hA4kmQ5Xzig=
+github.com/nspcc-dev/neo-go v0.70.1-pre.0.20191212173117-32ac01130d4c/go.mod h1:JtlHfeqLywZLswKIKFnAp+yzezY4Dji9qlfQKB2OD/I=
+github.com/nspcc-dev/neo-go v0.71.1-pre.0.20200129171427-f773ec69fb84/go.mod h1:FLI526IrRWHmcsO+mHsCbj64pJZhwQFTLJZu+A4PGOA=
 github.com/Workiva/go-datastructures v1.0.50 h1:slDmfW6KCHcC7U+LP3DDBbm4fqTwZGn1beOFPfGaLvo=
 github.com/Workiva/go-datastructures v1.0.50/go.mod h1:Z+F2Rca0qCsVYDS8z7bAGm8f3UkzuWYS/oBZz5a7VVA=
 github.com/abiosoft/ishell v2.0.0+incompatible h1:zpwIuEHc37EzrsIYah3cpevrIc8Oma7oZPxr03tlmmw=
diff --git a/integration/README.md b/integration/README.md
index 4903a78ff..5937214a1 100644
--- a/integration/README.md
+++ b/integration/README.md
@@ -13,7 +13,7 @@ Result:
 ```
 10000            402421 ns/op          177370 B/op         90 allocs/op
 PASS
-ok      github.com/CityOfZion/neo-go/integration        4.360s
+ok      github.com/nspcc-dev/neo-go/integration        4.360s
 
 ```
 
diff --git a/integration/performance_test.go b/integration/performance_test.go
index 7945ddfce..e3a4ba329 100644
--- a/integration/performance_test.go
+++ b/integration/performance_test.go
@@ -4,14 +4,14 @@ import (
 	"math/rand"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/config"
-	"github.com/CityOfZion/neo-go/pkg/core"
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/network"
-	"github.com/CityOfZion/neo-go/pkg/wallet"
+	"github.com/nspcc-dev/neo-go/config"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/network"
+	"github.com/nspcc-dev/neo-go/pkg/wallet"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/zap/zaptest"
diff --git a/pkg/compiler/codegen.go b/pkg/compiler/codegen.go
index 0f0f4563c..9956f9a9f 100644
--- a/pkg/compiler/codegen.go
+++ b/pkg/compiler/codegen.go
@@ -13,11 +13,11 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/vm"
-	"github.com/CityOfZion/neo-go/pkg/vm/emit"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 )
 
 // The identifier of the entry function. Default set to Main.
diff --git a/pkg/compiler/codegen_test.go b/pkg/compiler/codegen_test.go
index 369b71caa..b499771d8 100644
--- a/pkg/compiler/codegen_test.go
+++ b/pkg/compiler/codegen_test.go
@@ -4,8 +4,8 @@ import (
 	"go/token"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/compiler/compiler_test.go b/pkg/compiler/compiler_test.go
index 94d270228..2d004da20 100644
--- a/pkg/compiler/compiler_test.go
+++ b/pkg/compiler/compiler_test.go
@@ -6,7 +6,7 @@ import (
 	"path"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/compiler"
+	"github.com/nspcc-dev/neo-go/pkg/compiler"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/compiler/for_test.go b/pkg/compiler/for_test.go
index 56f34da3c..d45618168 100644
--- a/pkg/compiler/for_test.go
+++ b/pkg/compiler/for_test.go
@@ -6,9 +6,9 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/compiler"
+	"github.com/nspcc-dev/neo-go/pkg/compiler"
 
-	"github.com/CityOfZion/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/compiler/import_test.go b/pkg/compiler/import_test.go
index 4ce80e5b0..7c635be3e 100644
--- a/pkg/compiler/import_test.go
+++ b/pkg/compiler/import_test.go
@@ -9,7 +9,7 @@ func TestImportFunction(t *testing.T) {
 	src := `
 		package somethingelse
 
-		import "github.com/CityOfZion/neo-go/pkg/compiler/testdata/foo"
+		import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/foo"
 
 		func Main() int {
 			i := foo.NewBar()
@@ -23,7 +23,7 @@ func TestImportStruct(t *testing.T) {
 	src := `
 	 	package somethingwedontcareabout
 
-		import "github.com/CityOfZion/neo-go/pkg/compiler/testdata/bar"
+		import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/bar"
 
 	 	func Main() int {
 			 b := bar.Bar{
@@ -39,7 +39,7 @@ func TestMultipleDirFileImport(t *testing.T) {
 	src := `
 		package hello
 
-		import "github.com/CityOfZion/neo-go/pkg/compiler/testdata/foobar"
+		import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/foobar"
 
 		func Main() bool {
 			ok := foobar.OtherBool()
diff --git a/pkg/compiler/interop_test.go b/pkg/compiler/interop_test.go
index 2ebc71c29..4c2ef69ac 100644
--- a/pkg/compiler/interop_test.go
+++ b/pkg/compiler/interop_test.go
@@ -5,10 +5,10 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/compiler"
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/compiler"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/require"
 )
 
@@ -24,7 +24,7 @@ func TestFromAddress(t *testing.T) {
 	t.Run("append 2 addresses", func(t *testing.T) {
 		src := `
 		package foo
- 		import "github.com/CityOfZion/neo-go/pkg/interop/util"
+		import "github.com/nspcc-dev/neo-go/pkg/interop/util"
 		func Main() []byte {
 			addr1 := util.FromAddress("` + as1 + `")
 			addr2 := util.FromAddress("` + as2 + `")
@@ -39,7 +39,7 @@ func TestFromAddress(t *testing.T) {
 	t.Run("append 2 addresses inline", func(t *testing.T) {
 		src := `
 		package foo
- 		import "github.com/CityOfZion/neo-go/pkg/interop/util"
+		import "github.com/nspcc-dev/neo-go/pkg/interop/util"
 		func Main() []byte {
 			addr1 := util.FromAddress("` + as1 + `")
 			sum := append(addr1, util.FromAddress("` + as2 + `")...)
@@ -101,7 +101,7 @@ func TestAppCall(t *testing.T) {
 	t.Run("convert from string constant", func(t *testing.T) {
 		src := `
 		package foo
-		import "github.com/CityOfZion/neo-go/pkg/interop/engine"
+		import "github.com/nspcc-dev/neo-go/pkg/interop/engine"
 		const scriptHash = ` + fmt.Sprintf("%#v", string(ih.BytesBE())) + `
 		func Main() []byte {
 			x := []byte{1, 2}
@@ -123,7 +123,7 @@ func TestAppCall(t *testing.T) {
 func getAppCallScript(h string) string {
 	return `
 	package foo
-	import "github.com/CityOfZion/neo-go/pkg/interop/engine"
+	import "github.com/nspcc-dev/neo-go/pkg/interop/engine"
 	func Main() []byte {
 		x := []byte{1, 2}
 		y := []byte{3, 4}
diff --git a/pkg/compiler/panic_test.go b/pkg/compiler/panic_test.go
index f6e3b4d59..cdc857a82 100644
--- a/pkg/compiler/panic_test.go
+++ b/pkg/compiler/panic_test.go
@@ -5,7 +5,7 @@ import (
 	"math/big"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/compiler/struct_test.go b/pkg/compiler/struct_test.go
index 99521b57e..964edbbd4 100644
--- a/pkg/compiler/struct_test.go
+++ b/pkg/compiler/struct_test.go
@@ -4,7 +4,7 @@ import (
 	"math/big"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 )
 
 var structTestCases = []testCase{
diff --git a/pkg/compiler/syscall_test.go b/pkg/compiler/syscall_test.go
index 4e62721b3..e60544fb5 100644
--- a/pkg/compiler/syscall_test.go
+++ b/pkg/compiler/syscall_test.go
@@ -8,7 +8,7 @@ func TestStoragePutGet(t *testing.T) {
 	src := `
 		package foo
 
-		import "github.com/CityOfZion/neo-go/pkg/interop/storage"
+		import "github.com/nspcc-dev/neo-go/pkg/interop/storage"
 
 		func Main() string {
 			ctx := storage.GetContext()
diff --git a/pkg/compiler/testdata/compile/test.go b/pkg/compiler/testdata/compile/test.go
index 4290d67c4..5bc47d05a 100644
--- a/pkg/compiler/testdata/compile/test.go
+++ b/pkg/compiler/testdata/compile/test.go
@@ -1,6 +1,6 @@
 package compile
 
-import "github.com/CityOfZion/neo-go/pkg/interop/runtime"
+import "github.com/nspcc-dev/neo-go/pkg/interop/runtime"
 
 func Main() {
 	runtime.Notify("Hello world!")
diff --git a/pkg/compiler/util_test.go b/pkg/compiler/util_test.go
index 23ddd427f..90fc19c35 100644
--- a/pkg/compiler/util_test.go
+++ b/pkg/compiler/util_test.go
@@ -8,7 +8,7 @@ func TestSHA256(t *testing.T) {
 	src := `
 		package foo
 		 import (
-			"github.com/CityOfZion/neo-go/pkg/interop/crypto"
+			"github.com/nspcc-dev/neo-go/pkg/interop/crypto"
 		 )
 		func Main() []byte {
 			src := []byte{0x97}
@@ -23,7 +23,7 @@ func TestSHA1(t *testing.T) {
 	src := `
 		package foo
 		 import (
-			"github.com/CityOfZion/neo-go/pkg/interop/crypto"
+			"github.com/nspcc-dev/neo-go/pkg/interop/crypto"
 		 )
 		func Main() []byte {
 			src := []byte{0x97}
@@ -38,7 +38,7 @@ func TestHash160(t *testing.T) {
 	src := `
 		package foo
 		 import (
-			"github.com/CityOfZion/neo-go/pkg/interop/crypto"
+			"github.com/nspcc-dev/neo-go/pkg/interop/crypto"
 		 )
 		func Main() []byte {
 			src := []byte{0x97}
@@ -53,7 +53,7 @@ func TestHash256(t *testing.T) {
 	src := `
 		package foo
 		 import (
-			"github.com/CityOfZion/neo-go/pkg/interop/crypto"
+			"github.com/nspcc-dev/neo-go/pkg/interop/crypto"
 		 )
 		func Main() []byte {
 			src := []byte{0x97}
diff --git a/pkg/compiler/verify_test.go b/pkg/compiler/verify_test.go
index 276e2fab2..754a6d7a8 100644
--- a/pkg/compiler/verify_test.go
+++ b/pkg/compiler/verify_test.go
@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/stretchr/testify/require"
 )
 
@@ -43,7 +43,7 @@ func getVerifyProg(pub, sig, msg []byte) string {
 	return `
 		package hello
 
-		import "github.com/CityOfZion/neo-go/pkg/interop/crypto"
+		import "github.com/nspcc-dev/neo-go/pkg/interop/crypto"
 
 		func Main() bool {
 			pub := ` + pubS + `
diff --git a/pkg/compiler/vm_test.go b/pkg/compiler/vm_test.go
index 3e4780279..41ed566a4 100644
--- a/pkg/compiler/vm_test.go
+++ b/pkg/compiler/vm_test.go
@@ -5,8 +5,8 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/compiler"
-	"github.com/CityOfZion/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/compiler"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/consensus/block.go b/pkg/consensus/block.go
index 90824fe9e..ab4449b53 100644
--- a/pkg/consensus/block.go
+++ b/pkg/consensus/block.go
@@ -1,11 +1,11 @@
 package consensus
 
 import (
-	coreb "github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/util"
 	"github.com/nspcc-dev/dbft/block"
 	"github.com/nspcc-dev/dbft/crypto"
+	coreb "github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // neoBlock is a wrapper of core.Block which implements
diff --git a/pkg/consensus/block_test.go b/pkg/consensus/block_test.go
index fda210402..2da15057e 100644
--- a/pkg/consensus/block_test.go
+++ b/pkg/consensus/block_test.go
@@ -4,9 +4,9 @@ import (
 	"crypto/rand"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/util"
 	"github.com/nspcc-dev/dbft/block"
 	"github.com/nspcc-dev/dbft/crypto"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/consensus/cache.go b/pkg/consensus/cache.go
index 3ff86ff04..4a6853803 100644
--- a/pkg/consensus/cache.go
+++ b/pkg/consensus/cache.go
@@ -4,7 +4,7 @@ import (
 	"container/list"
 	"sync"
 
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // relayCache is a payload cache which is used to store
diff --git a/pkg/consensus/change_view.go b/pkg/consensus/change_view.go
index 6c7702c45..30ecf4eb0 100644
--- a/pkg/consensus/change_view.go
+++ b/pkg/consensus/change_view.go
@@ -1,8 +1,8 @@
 package consensus
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
 	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // changeView represents dBFT ChangeView message.
diff --git a/pkg/consensus/commit.go b/pkg/consensus/commit.go
index 2a3c39445..492a1a156 100644
--- a/pkg/consensus/commit.go
+++ b/pkg/consensus/commit.go
@@ -1,8 +1,8 @@
 package consensus
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
 	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // commit represents dBFT Commit message.
diff --git a/pkg/consensus/consensus.go b/pkg/consensus/consensus.go
index d2256f70b..c3fe279e7 100644
--- a/pkg/consensus/consensus.go
+++ b/pkg/consensus/consensus.go
@@ -6,20 +6,20 @@ import (
 	"sort"
 	"time"
 
-	"github.com/CityOfZion/neo-go/config"
-	"github.com/CityOfZion/neo-go/pkg/core"
-	coreb "github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/mempool"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
-	"github.com/CityOfZion/neo-go/pkg/wallet"
 	"github.com/nspcc-dev/dbft"
 	"github.com/nspcc-dev/dbft/block"
 	"github.com/nspcc-dev/dbft/crypto"
 	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/neo-go/config"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	coreb "github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/mempool"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/wallet"
 	"go.uber.org/zap"
 )
 
diff --git a/pkg/consensus/consensus_test.go b/pkg/consensus/consensus_test.go
index 7243bce01..c5304b987 100644
--- a/pkg/consensus/consensus_test.go
+++ b/pkg/consensus/consensus_test.go
@@ -3,14 +3,14 @@ package consensus
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/config"
-	"github.com/CityOfZion/neo-go/pkg/core"
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/util"
 	"github.com/nspcc-dev/dbft/block"
 	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/neo-go/config"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/zap/zaptest"
 )
diff --git a/pkg/consensus/crypto.go b/pkg/consensus/crypto.go
index 4088a64c9..795a38797 100644
--- a/pkg/consensus/crypto.go
+++ b/pkg/consensus/crypto.go
@@ -4,7 +4,7 @@ import (
 	"crypto/sha256"
 	"errors"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 )
 
 // privateKey is a wrapper around keys.PrivateKey
diff --git a/pkg/consensus/crypto_test.go b/pkg/consensus/crypto_test.go
index 9c7405343..2f6bd10ac 100644
--- a/pkg/consensus/crypto_test.go
+++ b/pkg/consensus/crypto_test.go
@@ -3,7 +3,7 @@ package consensus
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/consensus/payload.go b/pkg/consensus/payload.go
index 78ab2d8a3..0d9bc8b66 100644
--- a/pkg/consensus/payload.go
+++ b/pkg/consensus/payload.go
@@ -4,14 +4,14 @@ import (
 	"crypto/sha256"
 	"fmt"
 
-	"github.com/CityOfZion/neo-go/pkg/core"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
 	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/pkg/errors"
 )
 
diff --git a/pkg/consensus/payload_test.go b/pkg/consensus/payload_test.go
index 631388193..9c0c40162 100644
--- a/pkg/consensus/payload_test.go
+++ b/pkg/consensus/payload_test.go
@@ -7,12 +7,12 @@ import (
 	"testing"
 	"time"
 
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
 	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/consensus/prepare_request.go b/pkg/consensus/prepare_request.go
index efc8d53b2..bbc7ce90b 100644
--- a/pkg/consensus/prepare_request.go
+++ b/pkg/consensus/prepare_request.go
@@ -1,10 +1,10 @@
 package consensus
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
 	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // prepareRequest represents dBFT prepareRequest message.
diff --git a/pkg/consensus/prepare_request_test.go b/pkg/consensus/prepare_request_test.go
index 83b80c3f5..25d34bf68 100644
--- a/pkg/consensus/prepare_request_test.go
+++ b/pkg/consensus/prepare_request_test.go
@@ -3,7 +3,7 @@ package consensus
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/consensus/prepare_response.go b/pkg/consensus/prepare_response.go
index 08bbaac72..63b9bd98a 100644
--- a/pkg/consensus/prepare_response.go
+++ b/pkg/consensus/prepare_response.go
@@ -1,9 +1,9 @@
 package consensus
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
 	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // prepareResponse represents dBFT PrepareResponse message.
diff --git a/pkg/consensus/prepare_response_test.go b/pkg/consensus/prepare_response_test.go
index 171a128ea..6139848be 100644
--- a/pkg/consensus/prepare_response_test.go
+++ b/pkg/consensus/prepare_response_test.go
@@ -3,7 +3,7 @@ package consensus
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/consensus/recovery_message.go b/pkg/consensus/recovery_message.go
index 55e5ca70d..8bc30e269 100644
--- a/pkg/consensus/recovery_message.go
+++ b/pkg/consensus/recovery_message.go
@@ -1,10 +1,10 @@
 package consensus
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
 	"github.com/nspcc-dev/dbft/crypto"
 	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/pkg/errors"
 )
 
diff --git a/pkg/consensus/recovery_message_test.go b/pkg/consensus/recovery_message_test.go
index 07182701f..ed72f6fbe 100644
--- a/pkg/consensus/recovery_message_test.go
+++ b/pkg/consensus/recovery_message_test.go
@@ -5,11 +5,11 @@ import (
 	gio "io"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
 	"github.com/nspcc-dev/dbft/crypto"
 	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/consensus/recovery_request.go b/pkg/consensus/recovery_request.go
index d492279f2..d40c6f9e4 100644
--- a/pkg/consensus/recovery_request.go
+++ b/pkg/consensus/recovery_request.go
@@ -1,8 +1,8 @@
 package consensus
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
 	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // recoveryRequest represents dBFT RecoveryRequest message.
diff --git a/pkg/core/block/block.go b/pkg/core/block/block.go
index 4eb533a8d..37ec73847 100644
--- a/pkg/core/block/block.go
+++ b/pkg/core/block/block.go
@@ -4,11 +4,11 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
 	"github.com/Workiva/go-datastructures/queue"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // Block represents one block in the chain.
diff --git a/pkg/core/block/block_base.go b/pkg/core/block/block_base.go
index 8655ea9ac..e2dc11cbf 100644
--- a/pkg/core/block/block_base.go
+++ b/pkg/core/block/block_base.go
@@ -3,10 +3,10 @@ package block
 import (
 	"fmt"
 
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // Base holds the base info of a block
diff --git a/pkg/core/block/block_test.go b/pkg/core/block/block_test.go
index dc38d11e1..326f2adc1 100644
--- a/pkg/core/block/block_test.go
+++ b/pkg/core/block/block_test.go
@@ -4,10 +4,10 @@ import (
 	"encoding/hex"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/core/block/header.go b/pkg/core/block/header.go
index 98804870c..9b2ad907c 100644
--- a/pkg/core/block/header.go
+++ b/pkg/core/block/header.go
@@ -3,7 +3,7 @@ package block
 import (
 	"fmt"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // Header holds the head info of a block.
diff --git a/pkg/core/block/header_test.go b/pkg/core/block/header_test.go
index d7ea801f5..c7901c287 100644
--- a/pkg/core/block/header_test.go
+++ b/pkg/core/block/header_test.go
@@ -4,10 +4,10 @@ import (
 	"testing"
 	"time"
 
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/core/block/helper_test.go b/pkg/core/block/helper_test.go
index 8f3821cc6..92c8c88b0 100644
--- a/pkg/core/block/helper_test.go
+++ b/pkg/core/block/helper_test.go
@@ -7,7 +7,7 @@ import (
 	"io/ioutil"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/core/blockchain.go b/pkg/core/blockchain.go
index bb73152c7..d452bc8a3 100644
--- a/pkg/core/blockchain.go
+++ b/pkg/core/blockchain.go
@@ -9,19 +9,19 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/CityOfZion/neo-go/config"
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/mempool"
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract/trigger"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm"
-	"github.com/CityOfZion/neo-go/pkg/vm/emit"
+	"github.com/nspcc-dev/neo-go/config"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/mempool"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
 	"github.com/pkg/errors"
 	"go.uber.org/zap"
 )
diff --git a/pkg/core/blockchain_test.go b/pkg/core/blockchain_test.go
index 168dd0fc8..be2f5ccef 100644
--- a/pkg/core/blockchain_test.go
+++ b/pkg/core/blockchain_test.go
@@ -3,12 +3,12 @@ package core
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/core/blockchainer.go b/pkg/core/blockchainer.go
index d5368dd28..968ab66a0 100644
--- a/pkg/core/blockchainer.go
+++ b/pkg/core/blockchainer.go
@@ -1,15 +1,15 @@
 package core
 
 import (
-	"github.com/CityOfZion/neo-go/config"
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/mempool"
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/config"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/mempool"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 )
 
 // Blockchainer is an interface that abstract the implementation
diff --git a/pkg/core/cacheddao.go b/pkg/core/cacheddao.go
index d58acdedf..65e61c362 100644
--- a/pkg/core/cacheddao.go
+++ b/pkg/core/cacheddao.go
@@ -1,9 +1,9 @@
 package core
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // cachedDao is a data access object that mimics dao, but has a write cache
diff --git a/pkg/core/cacheddao_test.go b/pkg/core/cacheddao_test.go
index 9020fc73e..eab33348c 100644
--- a/pkg/core/cacheddao_test.go
+++ b/pkg/core/cacheddao_test.go
@@ -3,11 +3,11 @@ package core
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/internal/random"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/internal/random"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/core/dao.go b/pkg/core/dao.go
index 124316abe..34e4dab1e 100644
--- a/pkg/core/dao.go
+++ b/pkg/core/dao.go
@@ -6,13 +6,13 @@ import (
 	"fmt"
 	"sort"
 
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // dao is a data access object.
diff --git a/pkg/core/dao_test.go b/pkg/core/dao_test.go
index da2964c45..a854265ff 100644
--- a/pkg/core/dao_test.go
+++ b/pkg/core/dao_test.go
@@ -3,15 +3,15 @@ package core
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/internal/random"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/internal/random"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/core/gas_price.go b/pkg/core/gas_price.go
index cbed653ee..036dc0cbb 100644
--- a/pkg/core/gas_price.go
+++ b/pkg/core/gas_price.go
@@ -1,10 +1,10 @@
 package core
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 )
 
 // interopGasRatio is a multiplier by which a number returned from price getter
diff --git a/pkg/core/gas_price_test.go b/pkg/core/gas_price_test.go
index ab41c9e46..f3331527e 100644
--- a/pkg/core/gas_price_test.go
+++ b/pkg/core/gas_price_test.go
@@ -3,10 +3,10 @@ package core
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract/trigger"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/core/header_hash_list.go b/pkg/core/header_hash_list.go
index 1a4b2fc05..193566942 100644
--- a/pkg/core/header_hash_list.go
+++ b/pkg/core/header_hash_list.go
@@ -1,8 +1,8 @@
 package core
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // A HeaderHashList represents a list of header hashes.
diff --git a/pkg/core/helper_test.go b/pkg/core/helper_test.go
index 4ec207744..eb171e599 100644
--- a/pkg/core/helper_test.go
+++ b/pkg/core/helper_test.go
@@ -9,18 +9,18 @@ import (
 	"testing"
 	"time"
 
-	"github.com/CityOfZion/neo-go/config"
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm/emit"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
-	"github.com/CityOfZion/neo-go/pkg/wallet"
+	"github.com/nspcc-dev/neo-go/config"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/wallet"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/zap/zaptest"
 )
diff --git a/pkg/core/interop_neo.go b/pkg/core/interop_neo.go
index 1eb8e9b3c..a8ed517e5 100644
--- a/pkg/core/interop_neo.go
+++ b/pkg/core/interop_neo.go
@@ -6,13 +6,13 @@ import (
 	"math"
 	"strings"
 
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract/trigger"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 	gherr "github.com/pkg/errors"
 )
 
diff --git a/pkg/core/interop_neo_test.go b/pkg/core/interop_neo_test.go
index b8cb38ac1..e83d012b9 100644
--- a/pkg/core/interop_neo_test.go
+++ b/pkg/core/interop_neo_test.go
@@ -4,17 +4,17 @@ import (
 	"math/big"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/internal/random"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract/trigger"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/internal/random"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/core/interop_system.go b/pkg/core/interop_system.go
index 462b4ae91..81ea87299 100644
--- a/pkg/core/interop_system.go
+++ b/pkg/core/interop_system.go
@@ -5,13 +5,13 @@ import (
 	"fmt"
 	"math"
 
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract/trigger"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 	gherr "github.com/pkg/errors"
 	"go.uber.org/zap"
 )
diff --git a/pkg/core/interops.go b/pkg/core/interops.go
index 8ec6e7a66..14b5eae95 100644
--- a/pkg/core/interops.go
+++ b/pkg/core/interops.go
@@ -10,12 +10,12 @@ package core
 import (
 	"sort"
 
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract/trigger"
-	"github.com/CityOfZion/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 	"go.uber.org/zap"
 )
 
diff --git a/pkg/core/interops_test.go b/pkg/core/interops_test.go
index ab45d6dbd..feefe56bb 100644
--- a/pkg/core/interops_test.go
+++ b/pkg/core/interops_test.go
@@ -5,9 +5,9 @@ import (
 	"runtime"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract/trigger"
-	"github.com/CityOfZion/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/core/mempool/feer.go b/pkg/core/mempool/feer.go
index 74b3fb036..89b63dab5 100644
--- a/pkg/core/mempool/feer.go
+++ b/pkg/core/mempool/feer.go
@@ -1,8 +1,8 @@
 package mempool
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // Feer is an interface that abstract the implementation of the fee calculation.
diff --git a/pkg/core/mempool/mem_pool.go b/pkg/core/mempool/mem_pool.go
index 09b30bc29..5f9fe82ed 100644
--- a/pkg/core/mempool/mem_pool.go
+++ b/pkg/core/mempool/mem_pool.go
@@ -6,8 +6,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 var (
diff --git a/pkg/core/mempool/mem_pool_test.go b/pkg/core/mempool/mem_pool_test.go
index 6c1e1fe79..315361bb3 100644
--- a/pkg/core/mempool/mem_pool_test.go
+++ b/pkg/core/mempool/mem_pool_test.go
@@ -4,9 +4,9 @@ import (
 	"sort"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/internal/random"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/internal/random"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/core/spent_coin_state.go b/pkg/core/spent_coin_state.go
index 53cbb8eee..b7702f9c6 100644
--- a/pkg/core/spent_coin_state.go
+++ b/pkg/core/spent_coin_state.go
@@ -1,9 +1,9 @@
 package core
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // SpentCoinState represents the state of a spent coin.
diff --git a/pkg/core/spent_coin_state_test.go b/pkg/core/spent_coin_state_test.go
index ec8176130..b6a289974 100644
--- a/pkg/core/spent_coin_state_test.go
+++ b/pkg/core/spent_coin_state_test.go
@@ -3,8 +3,8 @@ package core
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/internal/random"
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/internal/random"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/core/state/account.go b/pkg/core/state/account.go
index cbb07dac0..828ce5bcc 100644
--- a/pkg/core/state/account.go
+++ b/pkg/core/state/account.go
@@ -1,9 +1,9 @@
 package state
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // UnspentBalance contains input/output transactons that sum up into the
diff --git a/pkg/core/state/account_test.go b/pkg/core/state/account_test.go
index 3981222f7..24d0ac457 100644
--- a/pkg/core/state/account_test.go
+++ b/pkg/core/state/account_test.go
@@ -3,10 +3,10 @@ package state
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/internal/random"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/internal/random"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/core/state/asset.go b/pkg/core/state/asset.go
index 6ecfd6dd5..0b624516b 100644
--- a/pkg/core/state/asset.go
+++ b/pkg/core/state/asset.go
@@ -1,10 +1,10 @@
 package state
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 const feeMode = 0x0
diff --git a/pkg/core/state/asset_test.go b/pkg/core/state/asset_test.go
index 5a0a1daed..75226c16e 100644
--- a/pkg/core/state/asset_test.go
+++ b/pkg/core/state/asset_test.go
@@ -3,11 +3,11 @@ package state
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/internal/random"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/internal/random"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/core/state/contract.go b/pkg/core/state/contract.go
index 6370b2f09..33e791fd3 100644
--- a/pkg/core/state/contract.go
+++ b/pkg/core/state/contract.go
@@ -1,10 +1,10 @@
 package state
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // Contract holds information about a smart contract in the NEO blockchain.
diff --git a/pkg/core/state/contract_test.go b/pkg/core/state/contract_test.go
index 9f57d51e9..902e8439e 100644
--- a/pkg/core/state/contract_test.go
+++ b/pkg/core/state/contract_test.go
@@ -3,9 +3,9 @@ package state
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/core/state/notification_event.go b/pkg/core/state/notification_event.go
index 8da4a7d58..24e6659e8 100644
--- a/pkg/core/state/notification_event.go
+++ b/pkg/core/state/notification_event.go
@@ -1,10 +1,10 @@
 package state
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract/trigger"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 )
 
 // NotificationEvent is a tuple of scripthash that emitted the StackItem as a
diff --git a/pkg/core/state/notification_event_test.go b/pkg/core/state/notification_event_test.go
index 0e92ae898..0f28e2957 100644
--- a/pkg/core/state/notification_event_test.go
+++ b/pkg/core/state/notification_event_test.go
@@ -3,8 +3,8 @@ package state
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/internal/random"
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/internal/random"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/core/state/storage_item.go b/pkg/core/state/storage_item.go
index 12cd24ad8..95f1f1c6c 100644
--- a/pkg/core/state/storage_item.go
+++ b/pkg/core/state/storage_item.go
@@ -1,7 +1,7 @@
 package state
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // StorageItem is the value to be stored with read-only flag.
diff --git a/pkg/core/state/storage_item_test.go b/pkg/core/state/storage_item_test.go
index aeb7a5b80..cbf850cbc 100644
--- a/pkg/core/state/storage_item_test.go
+++ b/pkg/core/state/storage_item_test.go
@@ -3,7 +3,7 @@ package state
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/core/state/validator.go b/pkg/core/state/validator.go
index 0fdb73c47..2a2d65fa1 100644
--- a/pkg/core/state/validator.go
+++ b/pkg/core/state/validator.go
@@ -1,9 +1,9 @@
 package state
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // MaxValidatorsVoted limits the number of validators that one can vote for.
diff --git a/pkg/core/state/validator_test.go b/pkg/core/state/validator_test.go
index ccd9d18d9..9d104773d 100644
--- a/pkg/core/state/validator_test.go
+++ b/pkg/core/state/validator_test.go
@@ -4,9 +4,9 @@ import (
 	"math/big"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/core/storage/boltdb_store.go b/pkg/core/storage/boltdb_store.go
index 4d1d10ed3..e1778dd40 100644
--- a/pkg/core/storage/boltdb_store.go
+++ b/pkg/core/storage/boltdb_store.go
@@ -5,8 +5,8 @@ import (
 	"fmt"
 	"os"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
 	"github.com/etcd-io/bbolt"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/syndtr/goleveldb/leveldb/util"
 )
 
diff --git a/pkg/core/transaction/attribute.go b/pkg/core/transaction/attribute.go
index e0923617e..ca4a0ed28 100644
--- a/pkg/core/transaction/attribute.go
+++ b/pkg/core/transaction/attribute.go
@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"fmt"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // Attribute represents a Transaction attribute.
diff --git a/pkg/core/transaction/claim.go b/pkg/core/transaction/claim.go
index 05f9b1a16..f88d43e35 100644
--- a/pkg/core/transaction/claim.go
+++ b/pkg/core/transaction/claim.go
@@ -1,7 +1,7 @@
 package transaction
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // ClaimTX represents a claim transaction.
diff --git a/pkg/core/transaction/contract.go b/pkg/core/transaction/contract.go
index 32e66388f..0444f3546 100644
--- a/pkg/core/transaction/contract.go
+++ b/pkg/core/transaction/contract.go
@@ -1,7 +1,7 @@
 package transaction
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // ContractTX represents a contract transaction.
diff --git a/pkg/core/transaction/contract_test.go b/pkg/core/transaction/contract_test.go
index 563e94d30..fe3a7348e 100644
--- a/pkg/core/transaction/contract_test.go
+++ b/pkg/core/transaction/contract_test.go
@@ -4,7 +4,7 @@ import (
 	"encoding/hex"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/core/transaction/enrollment.go b/pkg/core/transaction/enrollment.go
index 0d7c8a0e4..cb1bcb501 100644
--- a/pkg/core/transaction/enrollment.go
+++ b/pkg/core/transaction/enrollment.go
@@ -1,8 +1,8 @@
 package transaction
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // EnrollmentTX transaction represents an enrollment form, which indicates
diff --git a/pkg/core/transaction/enrollment_test.go b/pkg/core/transaction/enrollment_test.go
index a98cec4a4..8e1186d92 100644
--- a/pkg/core/transaction/enrollment_test.go
+++ b/pkg/core/transaction/enrollment_test.go
@@ -4,7 +4,7 @@ import (
 	"encoding/hex"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/core/transaction/helper_test.go b/pkg/core/transaction/helper_test.go
index beca5cf6a..b5563f54e 100644
--- a/pkg/core/transaction/helper_test.go
+++ b/pkg/core/transaction/helper_test.go
@@ -4,7 +4,7 @@ import (
 	"encoding/hex"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/core/transaction/input.go b/pkg/core/transaction/input.go
index c5b150c25..40462fba2 100644
--- a/pkg/core/transaction/input.go
+++ b/pkg/core/transaction/input.go
@@ -3,8 +3,8 @@ package transaction
 import (
 	"sort"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // Input represents a Transaction input (CoinReference).
diff --git a/pkg/core/transaction/input_test.go b/pkg/core/transaction/input_test.go
index 0375a4559..c8b9fad06 100644
--- a/pkg/core/transaction/input_test.go
+++ b/pkg/core/transaction/input_test.go
@@ -3,7 +3,7 @@ package transaction
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/core/transaction/invocation.go b/pkg/core/transaction/invocation.go
index 58f317fd7..1306dbbe8 100644
--- a/pkg/core/transaction/invocation.go
+++ b/pkg/core/transaction/invocation.go
@@ -1,8 +1,8 @@
 package transaction
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // InvocationTX represents a invocation transaction and is used to
diff --git a/pkg/core/transaction/issue.go b/pkg/core/transaction/issue.go
index 5e09bb171..fec4e6fe9 100644
--- a/pkg/core/transaction/issue.go
+++ b/pkg/core/transaction/issue.go
@@ -1,7 +1,7 @@
 package transaction
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // IssueTX represents a issue transaction.
diff --git a/pkg/core/transaction/miner.go b/pkg/core/transaction/miner.go
index 5189d34b6..62320bf56 100644
--- a/pkg/core/transaction/miner.go
+++ b/pkg/core/transaction/miner.go
@@ -1,7 +1,7 @@
 package transaction
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // MinerTX represents a miner transaction.
diff --git a/pkg/core/transaction/miner_test.go b/pkg/core/transaction/miner_test.go
index df17374ae..82cf54458 100644
--- a/pkg/core/transaction/miner_test.go
+++ b/pkg/core/transaction/miner_test.go
@@ -4,7 +4,7 @@ import (
 	"encoding/hex"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/core/transaction/output.go b/pkg/core/transaction/output.go
index ec9460923..1ee3d3252 100644
--- a/pkg/core/transaction/output.go
+++ b/pkg/core/transaction/output.go
@@ -3,9 +3,9 @@ package transaction
 import (
 	"encoding/json"
 
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // Output represents a Transaction output.
diff --git a/pkg/core/transaction/publish.go b/pkg/core/transaction/publish.go
index 8e44848e0..2acf80cbd 100644
--- a/pkg/core/transaction/publish.go
+++ b/pkg/core/transaction/publish.go
@@ -1,8 +1,8 @@
 package transaction
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
 )
 
 // PublishTX represents a publish transaction.
diff --git a/pkg/core/transaction/register.go b/pkg/core/transaction/register.go
index 2c7005bb8..321c5652b 100644
--- a/pkg/core/transaction/register.go
+++ b/pkg/core/transaction/register.go
@@ -1,9 +1,9 @@
 package transaction
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // RegisterTX represents a register transaction.
diff --git a/pkg/core/transaction/register_test.go b/pkg/core/transaction/register_test.go
index 4381cb4e8..199614194 100644
--- a/pkg/core/transaction/register_test.go
+++ b/pkg/core/transaction/register_test.go
@@ -4,10 +4,10 @@ import (
 	"encoding/hex"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/core/transaction/result.go b/pkg/core/transaction/result.go
index 76acee7a2..b5c639bca 100644
--- a/pkg/core/transaction/result.go
+++ b/pkg/core/transaction/result.go
@@ -1,6 +1,6 @@
 package transaction
 
-import "github.com/CityOfZion/neo-go/pkg/util"
+import "github.com/nspcc-dev/neo-go/pkg/util"
 
 // Result represents the Result of a transaction.
 type Result struct {
diff --git a/pkg/core/transaction/state.go b/pkg/core/transaction/state.go
index 76178a205..a3783eb0c 100644
--- a/pkg/core/transaction/state.go
+++ b/pkg/core/transaction/state.go
@@ -1,7 +1,7 @@
 package transaction
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // StateTX represents a state transaction.
diff --git a/pkg/core/transaction/state_descriptor.go b/pkg/core/transaction/state_descriptor.go
index 05f0a7f12..85f41a529 100644
--- a/pkg/core/transaction/state_descriptor.go
+++ b/pkg/core/transaction/state_descriptor.go
@@ -1,7 +1,7 @@
 package transaction
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // DescStateType represents the type of StateDescriptor.
diff --git a/pkg/core/transaction/state_test.go b/pkg/core/transaction/state_test.go
index 53fb17e7c..568b37bca 100644
--- a/pkg/core/transaction/state_test.go
+++ b/pkg/core/transaction/state_test.go
@@ -4,7 +4,7 @@ import (
 	"encoding/hex"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/core/transaction/transaction.go b/pkg/core/transaction/transaction.go
index f20962bc3..adfa9e2dc 100644
--- a/pkg/core/transaction/transaction.go
+++ b/pkg/core/transaction/transaction.go
@@ -4,9 +4,9 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 const (
diff --git a/pkg/core/transaction/transaction_test.go b/pkg/core/transaction/transaction_test.go
index 7a44dc674..ec410e5aa 100644
--- a/pkg/core/transaction/transaction_test.go
+++ b/pkg/core/transaction/transaction_test.go
@@ -4,10 +4,10 @@ import (
 	"encoding/hex"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/core/transaction/txer.go b/pkg/core/transaction/txer.go
index ca612c7fa..f48077f4d 100644
--- a/pkg/core/transaction/txer.go
+++ b/pkg/core/transaction/txer.go
@@ -1,6 +1,6 @@
 package transaction
 
-import "github.com/CityOfZion/neo-go/pkg/io"
+import "github.com/nspcc-dev/neo-go/pkg/io"
 
 // TXer is interface that can act as the underlying data of
 // a transaction.
diff --git a/pkg/core/transaction/witness.go b/pkg/core/transaction/witness.go
index 762838930..501663cd8 100644
--- a/pkg/core/transaction/witness.go
+++ b/pkg/core/transaction/witness.go
@@ -4,9 +4,9 @@ import (
 	"encoding/hex"
 	"encoding/json"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // Witness contains 2 scripts.
diff --git a/pkg/core/unspent_coin_state.go b/pkg/core/unspent_coin_state.go
index d522a8650..cbcd6a2e8 100644
--- a/pkg/core/unspent_coin_state.go
+++ b/pkg/core/unspent_coin_state.go
@@ -1,8 +1,8 @@
 package core
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // UnspentCoinState hold the state of a unspent coin.
diff --git a/pkg/core/unspent_coint_state_test.go b/pkg/core/unspent_coint_state_test.go
index 8864619c6..98e089f58 100644
--- a/pkg/core/unspent_coint_state_test.go
+++ b/pkg/core/unspent_coint_state_test.go
@@ -3,8 +3,8 @@ package core
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/core/util.go b/pkg/core/util.go
index 77fcddc22..864f60bd4 100644
--- a/pkg/core/util.go
+++ b/pkg/core/util.go
@@ -3,14 +3,14 @@ package core
 import (
 	"time"
 
-	"github.com/CityOfZion/neo-go/config"
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/config"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 )
 
 var (
diff --git a/pkg/core/util_test.go b/pkg/core/util_test.go
index e4498c35c..ff59855f0 100644
--- a/pkg/core/util_test.go
+++ b/pkg/core/util_test.go
@@ -3,8 +3,8 @@ package core
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/config"
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/config"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/crypto/hash/hash.go b/pkg/crypto/hash/hash.go
index 9be7f65ee..e161e4051 100644
--- a/pkg/crypto/hash/hash.go
+++ b/pkg/crypto/hash/hash.go
@@ -3,7 +3,7 @@ package hash
 import (
 	"crypto/sha256"
 
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"golang.org/x/crypto/ripemd160"
 )
 
diff --git a/pkg/crypto/hash/merkle_tree.go b/pkg/crypto/hash/merkle_tree.go
index 9d6642efa..b12d244bc 100644
--- a/pkg/crypto/hash/merkle_tree.go
+++ b/pkg/crypto/hash/merkle_tree.go
@@ -3,7 +3,7 @@ package hash
 import (
 	"errors"
 
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // MerkleTree implementation.
diff --git a/pkg/crypto/hash/merkle_tree_test.go b/pkg/crypto/hash/merkle_tree_test.go
index f7cd88dc5..d6494f2d1 100644
--- a/pkg/crypto/hash/merkle_tree_test.go
+++ b/pkg/crypto/hash/merkle_tree_test.go
@@ -3,7 +3,7 @@ package hash
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/crypto/keys/nep2.go b/pkg/crypto/keys/nep2.go
index 1f49298d2..505f13dd6 100644
--- a/pkg/crypto/keys/nep2.go
+++ b/pkg/crypto/keys/nep2.go
@@ -5,8 +5,8 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/encoding/base58"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/base58"
 	"golang.org/x/crypto/scrypt"
 	"golang.org/x/text/unicode/norm"
 )
diff --git a/pkg/crypto/keys/nep2_test.go b/pkg/crypto/keys/nep2_test.go
index a12c21447..98e48010d 100644
--- a/pkg/crypto/keys/nep2_test.go
+++ b/pkg/crypto/keys/nep2_test.go
@@ -3,7 +3,7 @@ package keys
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/internal/keytestcases"
+	"github.com/nspcc-dev/neo-go/pkg/internal/keytestcases"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/crypto/keys/private_key.go b/pkg/crypto/keys/private_key.go
index bf99021d4..0c2dc7d5b 100644
--- a/pkg/crypto/keys/private_key.go
+++ b/pkg/crypto/keys/private_key.go
@@ -10,7 +10,7 @@ import (
 	"fmt"
 	"math/big"
 
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/nspcc-dev/rfc6979"
 )
 
diff --git a/pkg/crypto/keys/private_key_test.go b/pkg/crypto/keys/private_key_test.go
index e457cfda2..d8d7c1dc2 100644
--- a/pkg/crypto/keys/private_key_test.go
+++ b/pkg/crypto/keys/private_key_test.go
@@ -5,7 +5,7 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/internal/keytestcases"
+	"github.com/nspcc-dev/neo-go/pkg/internal/keytestcases"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/crypto/keys/publickey.go b/pkg/crypto/keys/publickey.go
index 60951851e..c03f6dfa3 100644
--- a/pkg/crypto/keys/publickey.go
+++ b/pkg/crypto/keys/publickey.go
@@ -9,11 +9,11 @@ import (
 	"fmt"
 	"math/big"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/pkg/errors"
 )
 
diff --git a/pkg/crypto/keys/publickey_test.go b/pkg/crypto/keys/publickey_test.go
index f4aeb28aa..813798704 100644
--- a/pkg/crypto/keys/publickey_test.go
+++ b/pkg/crypto/keys/publickey_test.go
@@ -6,7 +6,7 @@ import (
 	"sort"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/crypto/keys/sign_verify_test.go b/pkg/crypto/keys/sign_verify_test.go
index 7ba494947..5241a2cc6 100644
--- a/pkg/crypto/keys/sign_verify_test.go
+++ b/pkg/crypto/keys/sign_verify_test.go
@@ -3,7 +3,7 @@ package keys
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/crypto/keys/wif.go b/pkg/crypto/keys/wif.go
index e23fbbd3c..b8bf971bb 100644
--- a/pkg/crypto/keys/wif.go
+++ b/pkg/crypto/keys/wif.go
@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"fmt"
 
-	"github.com/CityOfZion/neo-go/pkg/encoding/base58"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/base58"
 )
 
 const (
diff --git a/pkg/encoding/address/address.go b/pkg/encoding/address/address.go
index e02cca4ce..fc2ed4425 100644
--- a/pkg/encoding/address/address.go
+++ b/pkg/encoding/address/address.go
@@ -3,8 +3,8 @@ package address
 import (
 	"errors"
 
-	"github.com/CityOfZion/neo-go/pkg/encoding/base58"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/base58"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // Prefix is the byte used to prepend to addresses when encoding them, it can
diff --git a/pkg/encoding/base58/base58.go b/pkg/encoding/base58/base58.go
index 9c7398500..d14503e9c 100644
--- a/pkg/encoding/base58/base58.go
+++ b/pkg/encoding/base58/base58.go
@@ -3,8 +3,8 @@ package base58
 import (
 	"bytes"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
 	"github.com/mr-tron/base58"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
 	"github.com/pkg/errors"
 )
 
diff --git a/pkg/internal/random/random_util.go b/pkg/internal/random/random_util.go
index d07e4da50..de602966c 100644
--- a/pkg/internal/random/random_util.go
+++ b/pkg/internal/random/random_util.go
@@ -4,8 +4,8 @@ import (
 	"math/rand"
 	"time"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // String returns a random string with the n as its length.
diff --git a/pkg/interop/block/block.go b/pkg/interop/block/block.go
index 06191424a..e7171614a 100644
--- a/pkg/interop/block/block.go
+++ b/pkg/interop/block/block.go
@@ -1,6 +1,6 @@
 package block
 
-import "github.com/CityOfZion/neo-go/pkg/interop/transaction"
+import "github.com/nspcc-dev/neo-go/pkg/interop/transaction"
 
 // Package block provides function signatures that can be used inside
 // smart contracts that are written in the neo-go framework.
diff --git a/pkg/interop/blockchain/blockchain.go b/pkg/interop/blockchain/blockchain.go
index d27bdaa07..18ae7216b 100644
--- a/pkg/interop/blockchain/blockchain.go
+++ b/pkg/interop/blockchain/blockchain.go
@@ -1,12 +1,12 @@
 package blockchain
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/interop/account"
-	"github.com/CityOfZion/neo-go/pkg/interop/asset"
-	"github.com/CityOfZion/neo-go/pkg/interop/block"
-	"github.com/CityOfZion/neo-go/pkg/interop/contract"
-	"github.com/CityOfZion/neo-go/pkg/interop/header"
-	"github.com/CityOfZion/neo-go/pkg/interop/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/interop/account"
+	"github.com/nspcc-dev/neo-go/pkg/interop/asset"
+	"github.com/nspcc-dev/neo-go/pkg/interop/block"
+	"github.com/nspcc-dev/neo-go/pkg/interop/contract"
+	"github.com/nspcc-dev/neo-go/pkg/interop/header"
+	"github.com/nspcc-dev/neo-go/pkg/interop/transaction"
 )
 
 // Package blockchain provides function signatures that can be used inside
diff --git a/pkg/interop/contract/contract.go b/pkg/interop/contract/contract.go
index 55f60c0ad..f1d6af376 100644
--- a/pkg/interop/contract/contract.go
+++ b/pkg/interop/contract/contract.go
@@ -1,6 +1,6 @@
 package contract
 
-import "github.com/CityOfZion/neo-go/pkg/interop/storage"
+import "github.com/nspcc-dev/neo-go/pkg/interop/storage"
 
 // Package contract provides function signatures that can be used inside
 // smart contracts that are written in the neo-go framework.
diff --git a/pkg/interop/engine/engine.go b/pkg/interop/engine/engine.go
index d094e3a43..06a54e3fc 100644
--- a/pkg/interop/engine/engine.go
+++ b/pkg/interop/engine/engine.go
@@ -1,6 +1,6 @@
 package engine
 
-import "github.com/CityOfZion/neo-go/pkg/interop/transaction"
+import "github.com/nspcc-dev/neo-go/pkg/interop/transaction"
 
 // Package engine provides function signatures that can be used inside
 // smart contracts that are written in the neo-go framework.
diff --git a/pkg/interop/storage/storage.go b/pkg/interop/storage/storage.go
index 96c36b0ab..be0f10bc0 100644
--- a/pkg/interop/storage/storage.go
+++ b/pkg/interop/storage/storage.go
@@ -1,6 +1,6 @@
 package storage
 
-import "github.com/CityOfZion/neo-go/pkg/interop/iterator"
+import "github.com/nspcc-dev/neo-go/pkg/interop/iterator"
 
 // Package storage provides function signatures that can be used inside
 // smart contracts that are written in the neo-go framework.
diff --git a/pkg/interop/transaction/transaction.go b/pkg/interop/transaction/transaction.go
index 1acd54814..1d863f5c3 100644
--- a/pkg/interop/transaction/transaction.go
+++ b/pkg/interop/transaction/transaction.go
@@ -1,9 +1,9 @@
 package transaction
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/interop/attribute"
-	"github.com/CityOfZion/neo-go/pkg/interop/input"
-	"github.com/CityOfZion/neo-go/pkg/interop/output"
+	"github.com/nspcc-dev/neo-go/pkg/interop/attribute"
+	"github.com/nspcc-dev/neo-go/pkg/interop/input"
+	"github.com/nspcc-dev/neo-go/pkg/interop/output"
 )
 
 // Package transaction provides function signatures that can be used inside
diff --git a/pkg/io/size_test.go b/pkg/io/size_test.go
index ea5175956..26af4c026 100644
--- a/pkg/io/size_test.go
+++ b/pkg/io/size_test.go
@@ -4,8 +4,8 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/network/blockqueue.go b/pkg/network/blockqueue.go
index 2911ffced..762e569fa 100644
--- a/pkg/network/blockqueue.go
+++ b/pkg/network/blockqueue.go
@@ -1,9 +1,9 @@
 package network
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/core"
-	"github.com/CityOfZion/neo-go/pkg/core/block"
 	"github.com/Workiva/go-datastructures/queue"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
 	"go.uber.org/zap"
 )
 
diff --git a/pkg/network/blockqueue_test.go b/pkg/network/blockqueue_test.go
index af3540096..7141976cf 100644
--- a/pkg/network/blockqueue_test.go
+++ b/pkg/network/blockqueue_test.go
@@ -4,7 +4,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/CityOfZion/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
 	"github.com/stretchr/testify/assert"
 	"go.uber.org/zap/zaptest"
 )
diff --git a/pkg/network/helper_test.go b/pkg/network/helper_test.go
index 3133a9f5c..21161dc0c 100644
--- a/pkg/network/helper_test.go
+++ b/pkg/network/helper_test.go
@@ -7,18 +7,18 @@ import (
 	"testing"
 	"time"
 
-	"github.com/CityOfZion/neo-go/config"
-	"github.com/CityOfZion/neo-go/pkg/core"
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/mempool"
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/network/payload"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/config"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/mempool"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/network/payload"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 	"go.uber.org/zap/zaptest"
 )
 
diff --git a/pkg/network/message.go b/pkg/network/message.go
index 181b52cd5..1d651fd71 100644
--- a/pkg/network/message.go
+++ b/pkg/network/message.go
@@ -5,13 +5,13 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/CityOfZion/neo-go/config"
-	"github.com/CityOfZion/neo-go/pkg/consensus"
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/network/payload"
+	"github.com/nspcc-dev/neo-go/config"
+	"github.com/nspcc-dev/neo-go/pkg/consensus"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/network/payload"
 )
 
 const (
diff --git a/pkg/network/payload/address.go b/pkg/network/payload/address.go
index 248c313e2..e3d34ae92 100644
--- a/pkg/network/payload/address.go
+++ b/pkg/network/payload/address.go
@@ -5,7 +5,7 @@ import (
 	"strconv"
 	"time"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // AddressAndTime payload.
diff --git a/pkg/network/payload/address_test.go b/pkg/network/payload/address_test.go
index bfd2f2ded..446678280 100644
--- a/pkg/network/payload/address_test.go
+++ b/pkg/network/payload/address_test.go
@@ -6,7 +6,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/network/payload/getblocks.go b/pkg/network/payload/getblocks.go
index 98e2a9c47..5a07d38b4 100644
--- a/pkg/network/payload/getblocks.go
+++ b/pkg/network/payload/getblocks.go
@@ -1,8 +1,8 @@
 package payload
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // Maximum inventory hashes number is limited to 500.
diff --git a/pkg/network/payload/getblocks_test.go b/pkg/network/payload/getblocks_test.go
index dfa35bef0..0ab49bbd4 100644
--- a/pkg/network/payload/getblocks_test.go
+++ b/pkg/network/payload/getblocks_test.go
@@ -3,9 +3,9 @@ package payload
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/network/payload/headers.go b/pkg/network/payload/headers.go
index 1b0ed7fd4..b8abe8162 100644
--- a/pkg/network/payload/headers.go
+++ b/pkg/network/payload/headers.go
@@ -1,8 +1,8 @@
 package payload
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/pkg/errors"
 )
 
diff --git a/pkg/network/payload/headers_test.go b/pkg/network/payload/headers_test.go
index 008804eb0..b4e5056e6 100644
--- a/pkg/network/payload/headers_test.go
+++ b/pkg/network/payload/headers_test.go
@@ -4,9 +4,9 @@ import (
 	"encoding/hex"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/network/payload/inventory.go b/pkg/network/payload/inventory.go
index b1747719a..d582e0486 100644
--- a/pkg/network/payload/inventory.go
+++ b/pkg/network/payload/inventory.go
@@ -1,8 +1,8 @@
 package payload
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // The node can broadcast the object information it owns by this message.
diff --git a/pkg/network/payload/inventory_test.go b/pkg/network/payload/inventory_test.go
index 5e1d8ea92..41a17e541 100644
--- a/pkg/network/payload/inventory_test.go
+++ b/pkg/network/payload/inventory_test.go
@@ -3,9 +3,9 @@ package payload
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	. "github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	. "github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/network/payload/merkleblock.go b/pkg/network/payload/merkleblock.go
index 2aa31033e..c208246de 100644
--- a/pkg/network/payload/merkleblock.go
+++ b/pkg/network/payload/merkleblock.go
@@ -1,9 +1,9 @@
 package payload
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // MerkleBlock represents a merkle block packet payload.
diff --git a/pkg/network/payload/payload.go b/pkg/network/payload/payload.go
index 112008ffd..0c295b5d1 100644
--- a/pkg/network/payload/payload.go
+++ b/pkg/network/payload/payload.go
@@ -1,6 +1,6 @@
 package payload
 
-import "github.com/CityOfZion/neo-go/pkg/io"
+import "github.com/nspcc-dev/neo-go/pkg/io"
 
 // Payload is anything that can be binary encoded/decoded.
 type Payload interface {
diff --git a/pkg/network/payload/ping.go b/pkg/network/payload/ping.go
index 4444a4824..51af5bf3a 100644
--- a/pkg/network/payload/ping.go
+++ b/pkg/network/payload/ping.go
@@ -3,7 +3,7 @@ package payload
 import (
 	"time"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // Ping payload for ping/pong payloads.
diff --git a/pkg/network/payload/ping_test.go b/pkg/network/payload/ping_test.go
index c9f8678b8..6c71ab451 100644
--- a/pkg/network/payload/ping_test.go
+++ b/pkg/network/payload/ping_test.go
@@ -3,7 +3,7 @@ package payload
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/network/payload/version.go b/pkg/network/payload/version.go
index a6da82e02..3bb6bc345 100644
--- a/pkg/network/payload/version.go
+++ b/pkg/network/payload/version.go
@@ -3,7 +3,7 @@ package payload
 import (
 	"time"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // Size of the payload not counting UserAgent encoding (which is at least 1 byte
diff --git a/pkg/network/payload/version_test.go b/pkg/network/payload/version_test.go
index 4af2e2425..21fd497a0 100644
--- a/pkg/network/payload/version_test.go
+++ b/pkg/network/payload/version_test.go
@@ -3,7 +3,7 @@ package payload
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/network/peer.go b/pkg/network/peer.go
index 323127b4e..b40751251 100644
--- a/pkg/network/peer.go
+++ b/pkg/network/peer.go
@@ -3,7 +3,7 @@ package network
 import (
 	"net"
 
-	"github.com/CityOfZion/neo-go/pkg/network/payload"
+	"github.com/nspcc-dev/neo-go/pkg/network/payload"
 )
 
 // Peer represents a network node neo-go is connected to.
diff --git a/pkg/network/server.go b/pkg/network/server.go
index 86600405d..efd6d5e3f 100644
--- a/pkg/network/server.go
+++ b/pkg/network/server.go
@@ -10,12 +10,12 @@ import (
 	"sync"
 	"time"
 
-	"github.com/CityOfZion/neo-go/pkg/consensus"
-	"github.com/CityOfZion/neo-go/pkg/core"
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/network/payload"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/consensus"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/network/payload"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"go.uber.org/atomic"
 	"go.uber.org/zap"
 )
diff --git a/pkg/network/server_config.go b/pkg/network/server_config.go
index a383e30ec..42a2a1613 100644
--- a/pkg/network/server_config.go
+++ b/pkg/network/server_config.go
@@ -3,7 +3,7 @@ package network
 import (
 	"time"
 
-	"github.com/CityOfZion/neo-go/config"
+	"github.com/nspcc-dev/neo-go/config"
 	"go.uber.org/zap/zapcore"
 )
 
diff --git a/pkg/network/server_test.go b/pkg/network/server_test.go
index 99828f63b..5c68c4efd 100644
--- a/pkg/network/server_test.go
+++ b/pkg/network/server_test.go
@@ -4,7 +4,7 @@ import (
 	"net"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/network/payload"
+	"github.com/nspcc-dev/neo-go/pkg/network/payload"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/network/tcp_peer.go b/pkg/network/tcp_peer.go
index 62fd33b4c..db1c13bc4 100644
--- a/pkg/network/tcp_peer.go
+++ b/pkg/network/tcp_peer.go
@@ -8,8 +8,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/network/payload"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/network/payload"
 	"go.uber.org/zap"
 )
 
diff --git a/pkg/network/tcp_peer_test.go b/pkg/network/tcp_peer_test.go
index 5e2e6366d..210a2a331 100644
--- a/pkg/network/tcp_peer_test.go
+++ b/pkg/network/tcp_peer_test.go
@@ -4,7 +4,7 @@ import (
 	"net"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/network/payload"
+	"github.com/nspcc-dev/neo-go/pkg/network/payload"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/rpc/client/client.go b/pkg/rpc/client/client.go
index 8f9298e70..a18f42ef0 100644
--- a/pkg/rpc/client/client.go
+++ b/pkg/rpc/client/client.go
@@ -11,12 +11,12 @@ import (
 	"sync"
 	"time"
 
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/rpc/request"
-	"github.com/CityOfZion/neo-go/pkg/rpc/response"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/request"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/response"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/pkg/errors"
 )
 
diff --git a/pkg/rpc/client/neoscan.go b/pkg/rpc/client/neoscan.go
index 76d65bcfc..011eb9c67 100644
--- a/pkg/rpc/client/neoscan.go
+++ b/pkg/rpc/client/neoscan.go
@@ -6,10 +6,10 @@ import (
 	"net/http"
 	"sort"
 
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/rpc/response/result"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	errs "github.com/pkg/errors"
 )
 
diff --git a/pkg/rpc/client/rpc.go b/pkg/rpc/client/rpc.go
index 0fdf06ab7..834868ac1 100644
--- a/pkg/rpc/client/rpc.go
+++ b/pkg/rpc/client/rpc.go
@@ -3,14 +3,14 @@ package client
 import (
 	"encoding/hex"
 
-	"github.com/CityOfZion/neo-go/pkg/core"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/rpc/request"
-	"github.com/CityOfZion/neo-go/pkg/rpc/response/result"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/wallet"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/request"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/wallet"
 	"github.com/pkg/errors"
 )
 
diff --git a/pkg/rpc/request/param.go b/pkg/rpc/request/param.go
index 77dbd38bd..b3883ecdb 100644
--- a/pkg/rpc/request/param.go
+++ b/pkg/rpc/request/param.go
@@ -6,9 +6,9 @@ import (
 	"encoding/json"
 	"fmt"
 
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/pkg/errors"
 )
 
diff --git a/pkg/rpc/request/param_test.go b/pkg/rpc/request/param_test.go
index deaf36290..26d29bab1 100644
--- a/pkg/rpc/request/param_test.go
+++ b/pkg/rpc/request/param_test.go
@@ -5,9 +5,9 @@ import (
 	"encoding/json"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/rpc/request/scdetails.go b/pkg/rpc/request/scdetails.go
index f52302683..c53e21e61 100644
--- a/pkg/rpc/request/scdetails.go
+++ b/pkg/rpc/request/scdetails.go
@@ -1,6 +1,6 @@
 package request
 
-import "github.com/CityOfZion/neo-go/pkg/smartcontract"
+import "github.com/nspcc-dev/neo-go/pkg/smartcontract"
 
 // ContractDetails contains contract metadata.
 type ContractDetails struct {
diff --git a/pkg/rpc/request/txBuilder.go b/pkg/rpc/request/txBuilder.go
index e7aa6c376..8fe3df81c 100644
--- a/pkg/rpc/request/txBuilder.go
+++ b/pkg/rpc/request/txBuilder.go
@@ -5,15 +5,15 @@ import (
 	"fmt"
 	"strconv"
 
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm/emit"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
-	"github.com/CityOfZion/neo-go/pkg/wallet"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/wallet"
 	errs "github.com/pkg/errors"
 )
 
diff --git a/pkg/rpc/request/txTypes.go b/pkg/rpc/request/txTypes.go
index 0201e63e1..aebf8055f 100644
--- a/pkg/rpc/request/txTypes.go
+++ b/pkg/rpc/request/txTypes.go
@@ -6,9 +6,9 @@ package request
 */
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 type (
diff --git a/pkg/rpc/request/tx_builder_test.go b/pkg/rpc/request/tx_builder_test.go
index 8b5254e17..ef9dcb326 100644
--- a/pkg/rpc/request/tx_builder_test.go
+++ b/pkg/rpc/request/tx_builder_test.go
@@ -4,8 +4,8 @@ import (
 	"encoding/hex"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/rpc/response/result/account_state.go b/pkg/rpc/response/result/account_state.go
index df1dad2b9..5eeb6c1ba 100644
--- a/pkg/rpc/response/result/account_state.go
+++ b/pkg/rpc/response/result/account_state.go
@@ -4,9 +4,9 @@ import (
 	"bytes"
 	"sort"
 
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // AccountState wrapper used for the representation of
diff --git a/pkg/rpc/response/result/application_log.go b/pkg/rpc/response/result/application_log.go
index 9e4f7fcc8..83275b9bd 100644
--- a/pkg/rpc/response/result/application_log.go
+++ b/pkg/rpc/response/result/application_log.go
@@ -3,10 +3,10 @@ package result
 import (
 	"encoding/json"
 
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 )
 
 // ApplicationLog wrapper used for the representation of the
diff --git a/pkg/rpc/response/result/asset_state.go b/pkg/rpc/response/result/asset_state.go
index ffedbb6bb..8d7ffe137 100644
--- a/pkg/rpc/response/result/asset_state.go
+++ b/pkg/rpc/response/result/asset_state.go
@@ -1,10 +1,10 @@
 package result
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // AssetState wrapper used for the representation of
diff --git a/pkg/rpc/response/result/block.go b/pkg/rpc/response/result/block.go
index aa8a20377..440161490 100644
--- a/pkg/rpc/response/result/block.go
+++ b/pkg/rpc/response/result/block.go
@@ -3,11 +3,11 @@ package result
 import (
 	"strconv"
 
-	"github.com/CityOfZion/neo-go/pkg/core"
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 type (
diff --git a/pkg/rpc/response/result/claimable.go b/pkg/rpc/response/result/claimable.go
index d537a5891..71dbc60b8 100644
--- a/pkg/rpc/response/result/claimable.go
+++ b/pkg/rpc/response/result/claimable.go
@@ -1,6 +1,6 @@
 package result
 
-import "github.com/CityOfZion/neo-go/pkg/util"
+import "github.com/nspcc-dev/neo-go/pkg/util"
 
 // ClaimableInfo is a result of a getclaimable RPC call.
 type ClaimableInfo struct {
diff --git a/pkg/rpc/response/result/contract_state.go b/pkg/rpc/response/result/contract_state.go
index 08e8a277a..55a75e201 100644
--- a/pkg/rpc/response/result/contract_state.go
+++ b/pkg/rpc/response/result/contract_state.go
@@ -1,9 +1,9 @@
 package result
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // ContractState wrapper used for the representation of
diff --git a/pkg/rpc/response/result/invoke.go b/pkg/rpc/response/result/invoke.go
index 171fd1b65..d249d06fb 100644
--- a/pkg/rpc/response/result/invoke.go
+++ b/pkg/rpc/response/result/invoke.go
@@ -1,7 +1,7 @@
 package result
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
 )
 
 // Invoke represents code invocation result and is used by several RPC calls
diff --git a/pkg/rpc/response/result/tx_output.go b/pkg/rpc/response/result/tx_output.go
index 19a6fc66b..4078de755 100644
--- a/pkg/rpc/response/result/tx_output.go
+++ b/pkg/rpc/response/result/tx_output.go
@@ -1,9 +1,9 @@
 package result
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // TransactionOutput is a wrapper to represent transaction's output.
diff --git a/pkg/rpc/response/result/tx_raw_output.go b/pkg/rpc/response/result/tx_raw_output.go
index 512514471..288311422 100644
--- a/pkg/rpc/response/result/tx_raw_output.go
+++ b/pkg/rpc/response/result/tx_raw_output.go
@@ -1,11 +1,11 @@
 package result
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/core"
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // TransactionOutputRaw is used as a wrapper to represents
diff --git a/pkg/rpc/response/result/unspents.go b/pkg/rpc/response/result/unspents.go
index d903f8a30..623d2e1a5 100644
--- a/pkg/rpc/response/result/unspents.go
+++ b/pkg/rpc/response/result/unspents.go
@@ -1,9 +1,9 @@
 package result
 
 import (
-	"github.com/CityOfZion/neo-go/pkg/core"
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // UnspentBalanceInfo wrapper is used to represent single unspent asset entry
diff --git a/pkg/rpc/response/types.go b/pkg/rpc/response/types.go
index 7c53040fc..0b236826a 100644
--- a/pkg/rpc/response/types.go
+++ b/pkg/rpc/response/types.go
@@ -3,7 +3,7 @@ package response
 import (
 	"encoding/json"
 
-	"github.com/CityOfZion/neo-go/pkg/rpc/response/result"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
 )
 
 // Header is a generic JSON-RPC 2.0 response header (ID and JSON-RPC version).
diff --git a/pkg/rpc/server/server.go b/pkg/rpc/server/server.go
index 9b5967554..5a47cd7c6 100644
--- a/pkg/rpc/server/server.go
+++ b/pkg/rpc/server/server.go
@@ -8,18 +8,18 @@ import (
 	"net/http"
 	"strconv"
 
-	"github.com/CityOfZion/neo-go/config"
-	"github.com/CityOfZion/neo-go/pkg/core"
-	"github.com/CityOfZion/neo-go/pkg/core/state"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/network"
-	"github.com/CityOfZion/neo-go/pkg/rpc/request"
-	"github.com/CityOfZion/neo-go/pkg/rpc/response"
-	"github.com/CityOfZion/neo-go/pkg/rpc/response/result"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/config"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/network"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/request"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/response"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/pkg/errors"
 	"go.uber.org/zap"
 )
diff --git a/pkg/rpc/server/server_helper_test.go b/pkg/rpc/server/server_helper_test.go
index 6bfeaba4c..85f464dda 100644
--- a/pkg/rpc/server/server_helper_test.go
+++ b/pkg/rpc/server/server_helper_test.go
@@ -5,14 +5,14 @@ import (
 	"os"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/config"
-	"github.com/CityOfZion/neo-go/pkg/core"
-	"github.com/CityOfZion/neo-go/pkg/core/block"
-	"github.com/CityOfZion/neo-go/pkg/core/storage"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/network"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/config"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/block"
+	"github.com/nspcc-dev/neo-go/pkg/core/storage"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/network"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/zap/zaptest"
 )
diff --git a/pkg/rpc/server/server_test.go b/pkg/rpc/server/server_test.go
index 52f0ea008..05a93da14 100644
--- a/pkg/rpc/server/server_test.go
+++ b/pkg/rpc/server/server_test.go
@@ -12,12 +12,12 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/core"
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/internal/random"
-	"github.com/CityOfZion/neo-go/pkg/rpc/response"
-	"github.com/CityOfZion/neo-go/pkg/rpc/response/result"
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/core"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/internal/random"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/response"
+	"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/rpc/server/testdata/test_contract.go b/pkg/rpc/server/testdata/test_contract.go
index f1ee83997..33b4d5bd3 100644
--- a/pkg/rpc/server/testdata/test_contract.go
+++ b/pkg/rpc/server/testdata/test_contract.go
@@ -1,6 +1,6 @@
 package testdata
 
-import "github.com/CityOfZion/neo-go/pkg/interop/storage"
+import "github.com/nspcc-dev/neo-go/pkg/interop/storage"
 
 func Main(operation string, args []interface{}) interface{} {
 	ctx := storage.GetContext()
diff --git a/pkg/smartcontract/contract.go b/pkg/smartcontract/contract.go
index 297c0362a..d021637e5 100644
--- a/pkg/smartcontract/contract.go
+++ b/pkg/smartcontract/contract.go
@@ -4,10 +4,10 @@ import (
 	"fmt"
 	"sort"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/vm/emit"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 )
 
 // CreateMultiSigRedeemScript creates a script runnable by the VM.
diff --git a/pkg/smartcontract/contract_test.go b/pkg/smartcontract/contract_test.go
index dbebbdab2..f07683fe5 100644
--- a/pkg/smartcontract/contract_test.go
+++ b/pkg/smartcontract/contract_test.go
@@ -3,9 +3,9 @@ package smartcontract
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/smartcontract/param_context.go b/pkg/smartcontract/param_context.go
index ed5e9c887..c80d67d19 100644
--- a/pkg/smartcontract/param_context.go
+++ b/pkg/smartcontract/param_context.go
@@ -9,7 +9,7 @@ import (
 	"strings"
 	"unicode/utf8"
 
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/pkg/errors"
 )
 
diff --git a/pkg/smartcontract/param_context_test.go b/pkg/smartcontract/param_context_test.go
index 1a188a4be..b6870e8eb 100644
--- a/pkg/smartcontract/param_context_test.go
+++ b/pkg/smartcontract/param_context_test.go
@@ -6,7 +6,7 @@ import (
 	"reflect"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/smartcontract/param_type.go b/pkg/smartcontract/param_type.go
index 0c98125fd..ed00bb112 100644
--- a/pkg/smartcontract/param_type.go
+++ b/pkg/smartcontract/param_type.go
@@ -6,9 +6,9 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/pkg/errors"
 )
 
diff --git a/pkg/util/fixed8.go b/pkg/util/fixed8.go
index 1282da8b8..6604f0f38 100644
--- a/pkg/util/fixed8.go
+++ b/pkg/util/fixed8.go
@@ -6,7 +6,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 const (
diff --git a/pkg/util/fixed8_test.go b/pkg/util/fixed8_test.go
index 7b2c76463..893cc86dc 100644
--- a/pkg/util/fixed8_test.go
+++ b/pkg/util/fixed8_test.go
@@ -5,8 +5,8 @@ import (
 	"strconv"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
 	"github.com/go-yaml/yaml"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/util/uint256.go b/pkg/util/uint256.go
index b8b5588bf..9e3c0df2f 100644
--- a/pkg/util/uint256.go
+++ b/pkg/util/uint256.go
@@ -7,7 +7,7 @@ import (
 	"fmt"
 	"strings"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
 // Uint256Size is the size of Uint256 in bytes.
diff --git a/pkg/util/uint256_test.go b/pkg/util/uint256_test.go
index 9fc8bf1c0..4f12fd658 100644
--- a/pkg/util/uint256_test.go
+++ b/pkg/util/uint256_test.go
@@ -4,7 +4,7 @@ import (
 	"encoding/hex"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/vm/cli/cli.go b/pkg/vm/cli/cli.go
index 3054df427..0eec6dbff 100644
--- a/pkg/vm/cli/cli.go
+++ b/pkg/vm/cli/cli.go
@@ -10,8 +10,8 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/CityOfZion/neo-go/pkg/compiler"
-	"github.com/CityOfZion/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/compiler"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 	"gopkg.in/abiosoft/ishell.v2"
 )
 
diff --git a/pkg/vm/context.go b/pkg/vm/context.go
index cb540cea2..43ea9c6ae 100644
--- a/pkg/vm/context.go
+++ b/pkg/vm/context.go
@@ -4,10 +4,10 @@ import (
 	"encoding/binary"
 	"errors"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 )
 
 // Context represents the current execution context of the VM.
diff --git a/pkg/vm/contract_checks.go b/pkg/vm/contract_checks.go
index 375c3ceec..ecb9dfb31 100644
--- a/pkg/vm/contract_checks.go
+++ b/pkg/vm/contract_checks.go
@@ -3,7 +3,7 @@ package vm
 import (
 	"encoding/binary"
 
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 )
 
 func getNumOfThingsFromInstr(instr opcode.Opcode, param []byte) (int, bool) {
diff --git a/pkg/vm/contract_checks_test.go b/pkg/vm/contract_checks_test.go
index bafeaff67..fc2dcae85 100644
--- a/pkg/vm/contract_checks_test.go
+++ b/pkg/vm/contract_checks_test.go
@@ -3,7 +3,7 @@ package vm
 import (
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/vm/emit/bigint_test.go b/pkg/vm/emit/bigint_test.go
index 542c4050b..2195ac3dc 100644
--- a/pkg/vm/emit/bigint_test.go
+++ b/pkg/vm/emit/bigint_test.go
@@ -5,7 +5,7 @@ import (
 	"math/big"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/vm/emit/emit.go b/pkg/vm/emit/emit.go
index 5bba67a9b..60ace95c8 100644
--- a/pkg/vm/emit/emit.go
+++ b/pkg/vm/emit/emit.go
@@ -6,9 +6,9 @@ import (
 	"fmt"
 	"math/big"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 )
 
 // Instruction emits a VM Instruction with data to the given buffer.
diff --git a/pkg/vm/emit/emit_test.go b/pkg/vm/emit/emit_test.go
index ed6c94cd5..8dd3e525b 100644
--- a/pkg/vm/emit/emit_test.go
+++ b/pkg/vm/emit/emit_test.go
@@ -5,8 +5,8 @@ import (
 	"errors"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/stretchr/testify/assert"
 )
 
diff --git a/pkg/vm/json_test.go b/pkg/vm/json_test.go
index c8ba85e35..a92a103a7 100644
--- a/pkg/vm/json_test.go
+++ b/pkg/vm/json_test.go
@@ -13,11 +13,10 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/vm/emit"
-
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/pkg/vm/serialization.go b/pkg/vm/serialization.go
index 194348968..fd01cc14e 100644
--- a/pkg/vm/serialization.go
+++ b/pkg/vm/serialization.go
@@ -3,9 +3,8 @@ package vm
 import (
 	"errors"
 
-	"github.com/CityOfZion/neo-go/pkg/vm/emit"
-
-	"github.com/CityOfZion/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
 )
 
 type stackItemType byte
diff --git a/pkg/vm/stack.go b/pkg/vm/stack.go
index bc3142363..b9b417212 100644
--- a/pkg/vm/stack.go
+++ b/pkg/vm/stack.go
@@ -6,8 +6,8 @@ import (
 	"fmt"
 	"math/big"
 
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/vm/emit"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
 )
 
 // Stack implementation for the neo-go virtual machine. The stack implements
diff --git a/pkg/vm/stack_item.go b/pkg/vm/stack_item.go
index d7184abdf..9ab19f835 100644
--- a/pkg/vm/stack_item.go
+++ b/pkg/vm/stack_item.go
@@ -8,8 +8,8 @@ import (
 	"math/big"
 	"reflect"
 
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/vm/emit"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
 )
 
 // A StackItem represents the "real" value that is pushed on the stack.
diff --git a/pkg/vm/stack_item_test.go b/pkg/vm/stack_item_test.go
index 24ca5f2f9..5725b9aad 100644
--- a/pkg/vm/stack_item_test.go
+++ b/pkg/vm/stack_item_test.go
@@ -3,9 +3,8 @@ package vm
 import (
 	"testing"
 
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
 	"github.com/stretchr/testify/assert"
-
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
 )
 
 var toContractParameterTestCases = []struct {
diff --git a/pkg/vm/vm.go b/pkg/vm/vm.go
index e5300377b..4ec5b603f 100644
--- a/pkg/vm/vm.go
+++ b/pkg/vm/vm.go
@@ -12,10 +12,10 @@ import (
 	"text/tabwriter"
 	"unicode/utf8"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/pkg/errors"
 )
 
diff --git a/pkg/vm/vm_test.go b/pkg/vm/vm_test.go
index 7b4b9e225..c8488d189 100644
--- a/pkg/vm/vm_test.go
+++ b/pkg/vm/vm_test.go
@@ -8,13 +8,12 @@ import (
 	"math/rand"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/io"
-
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm/emit"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/wallet/account.go b/pkg/wallet/account.go
index 68a44363b..46e016c23 100644
--- a/pkg/wallet/account.go
+++ b/pkg/wallet/account.go
@@ -7,13 +7,13 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/CityOfZion/neo-go/pkg/core/transaction"
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
-	"github.com/CityOfZion/neo-go/pkg/smartcontract"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm/opcode"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 )
 
 // Account represents a NEO account. It holds the private and public key
diff --git a/pkg/wallet/account_test.go b/pkg/wallet/account_test.go
index 1a8e0330a..365c28f8d 100644
--- a/pkg/wallet/account_test.go
+++ b/pkg/wallet/account_test.go
@@ -5,9 +5,9 @@ import (
 	"encoding/json"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/internal/keytestcases"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/internal/keytestcases"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
diff --git a/pkg/wallet/wallet.go b/pkg/wallet/wallet.go
index 8a6826f5b..e01c22eba 100644
--- a/pkg/wallet/wallet.go
+++ b/pkg/wallet/wallet.go
@@ -5,9 +5,9 @@ import (
 	"io"
 	"os"
 
-	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
-	"github.com/CityOfZion/neo-go/pkg/util"
-	"github.com/CityOfZion/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 )
 
 const (
diff --git a/pkg/wallet/wallet_test.go b/pkg/wallet/wallet_test.go
index eee01b199..73e417ec3 100644
--- a/pkg/wallet/wallet_test.go
+++ b/pkg/wallet/wallet_test.go
@@ -6,7 +6,7 @@ import (
 	"os"
 	"testing"
 
-	"github.com/CityOfZion/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )