diff --git a/cli/testdata/verify.nef b/cli/testdata/verify.nef
index f8bf2ff48..5bb3c8bbe 100755
Binary files a/cli/testdata/verify.nef and b/cli/testdata/verify.nef differ
diff --git a/pkg/rpc/server/server_test.go b/pkg/rpc/server/server_test.go
index 1c203176a..42bd9a93c 100644
--- a/pkg/rpc/server/server_test.go
+++ b/pkg/rpc/server/server_test.go
@@ -57,7 +57,7 @@ type rpcTestCase struct {
 }
 
 const testContractHash = "743ed26f78e29ecd595535b74a943b1f9ccbc444"
-const deploymentTxHash = "3f81bc99525ed4b1cbb4a3535feadf73176db646a2879aaf975737348a425edc"
+const deploymentTxHash = "9ecf1273fe0d8868cc024c8270b569a12edd7ea9d675c88554b937134efb03f8"
 const genesisBlockHash = "a496577895eb8c227bb866dc44f99f21c0cf06417ca8f2a877cc5d761a50dac0"
 
 const verifyContractHash = "a2eb22340979804cb10cc1add0b8822c201f4d8a"
@@ -1345,7 +1345,7 @@ func checkNep17Balances(t *testing.T, e *executor, acc interface{}) {
 			},
 			{
 				Asset:       e.chain.UtilityTokenHash(),
-				Amount:      "80009730770",
+				Amount:      "80009698770",
 				LastUpdated: 7,
 			}},
 		Address: testchain.PrivateKeyByID(0).GetScriptHash().StringLE(),
diff --git a/pkg/rpc/server/testdata/testblocks.acc b/pkg/rpc/server/testdata/testblocks.acc
index 999cb641f..444446512 100644
Binary files a/pkg/rpc/server/testdata/testblocks.acc and b/pkg/rpc/server/testdata/testblocks.acc differ
diff --git a/pkg/smartcontract/nef/nef.go b/pkg/smartcontract/nef/nef.go
index e0a172b0d..af2a42024 100644
--- a/pkg/smartcontract/nef/nef.go
+++ b/pkg/smartcontract/nef/nef.go
@@ -18,7 +18,7 @@ import (
 // +------------+-----------+------------------------------------------------------------+
 // | Magic      | 4 bytes   | Magic header                                               |
 // | Compiler   | 32 bytes  | Compiler used                                              |
-// | Version    | 16 bytes  | Compiler version                                           |
+// | Version    | 32 bytes  | Compiler version                                           |
 // +------------+-----------+------------------------------------------------------------+
 // | Script     | Var bytes | Var bytes for the payload                                  |
 // +------------+-----------+------------------------------------------------------------+
@@ -30,10 +30,8 @@ const (
 	Magic uint32 = 0x3346454E
 	// MaxScriptLength is the maximum allowed contract script length.
 	MaxScriptLength = 1024 * 1024
-	// compilerFieldSize is the length of `Compiler` File header field in bytes.
+	// compilerFieldSize is the length of `Compiler` and `Version` File header fields in bytes.
 	compilerFieldSize = 32
-	// versionFieldSize is the length of `Version` File header field in bytes.
-	versionFieldSize = 16
 )
 
 // File represents compiled contract file structure according to the NEF3 standard.
@@ -60,7 +58,7 @@ func NewFile(script []byte) (*File, error) {
 		},
 		Script: script,
 	}
-	if len(config.Version) > versionFieldSize {
+	if len(config.Version) > compilerFieldSize {
 		return nil, errors.New("too long version")
 	}
 	file.Checksum = file.CalculateChecksum()
@@ -77,7 +75,6 @@ func (h *Header) EncodeBinary(w *io.BinWriter) {
 	var b = make([]byte, compilerFieldSize)
 	copy(b, []byte(h.Compiler))
 	w.WriteBytes(b)
-	b = b[:versionFieldSize]
 	for i := range b {
 		b[i] = 0
 	}
@@ -98,7 +95,7 @@ func (h *Header) DecodeBinary(r *io.BinReader) {
 		return r == 0
 	})
 	h.Compiler = string(buf)
-	buf = buf[:versionFieldSize]
+	buf = buf[:compilerFieldSize]
 	r.ReadBytes(buf)
 	buf = bytes.TrimRightFunc(buf, func(r rune) bool {
 		return r == 0