diff --git a/session/container_test.go b/session/container_test.go
index d906482..73fd815 100644
--- a/session/container_test.go
+++ b/session/container_test.go
@@ -1,6 +1,7 @@
 package session_test
 
 import (
+	"bytes"
 	"crypto/rand"
 	"fmt"
 	"math"
@@ -17,7 +18,6 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	usertest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user/test"
 	"github.com/google/uuid"
-	"github.com/nspcc-dev/neo-go/pkg/util/slice"
 	"github.com/stretchr/testify/require"
 )
 
@@ -179,7 +179,7 @@ func TestContainerProtocolV2(t *testing.T) {
 			breakSign: func(m *v2session.Token) {
 				body := m.GetBody()
 				key := body.GetSessionKey()
-				cp := slice.Copy(key)
+				cp := bytes.Clone(key)
 				cp[len(cp)-1]++
 				body.SetSessionKey(cp)
 			},
diff --git a/session/object_test.go b/session/object_test.go
index 1df0f76..6990ff8 100644
--- a/session/object_test.go
+++ b/session/object_test.go
@@ -1,6 +1,7 @@
 package session_test
 
 import (
+	"bytes"
 	"crypto/ecdsa"
 	"fmt"
 	"math"
@@ -19,7 +20,6 @@ import (
 	usertest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user/test"
 	"github.com/google/uuid"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
-	"github.com/nspcc-dev/neo-go/pkg/util/slice"
 	"github.com/stretchr/testify/require"
 )
 
@@ -200,7 +200,7 @@ func TestObjectProtocolV2(t *testing.T) {
 			breakSign: func(m *v2session.Token) {
 				body := m.GetBody()
 				key := body.GetSessionKey()
-				cp := slice.Copy(key)
+				cp := bytes.Clone(key)
 				cp[len(cp)-1]++
 				body.SetSessionKey(cp)
 			},
diff --git a/user/id_test.go b/user/id_test.go
index 00b0884..9867472 100644
--- a/user/id_test.go
+++ b/user/id_test.go
@@ -1,6 +1,7 @@
 package user_test
 
 import (
+	"bytes"
 	"crypto/rand"
 	"testing"
 
@@ -10,7 +11,6 @@ import (
 	"github.com/mr-tron/base58"
 	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
 	"github.com/nspcc-dev/neo-go/pkg/util"
-	"github.com/nspcc-dev/neo-go/pkg/util/slice"
 	"github.com/stretchr/testify/require"
 )
 
@@ -84,7 +84,7 @@ func TestV2_ID(t *testing.T) {
 	})
 
 	t.Run("invalid prefix", func(t *testing.T) {
-		val := slice.Copy(val)
+		val := bytes.Clone(val)
 		val[0]++
 
 		m.SetValue(val)
@@ -94,7 +94,7 @@ func TestV2_ID(t *testing.T) {
 	})
 
 	t.Run("invalid checksum", func(t *testing.T) {
-		val := slice.Copy(val)
+		val := bytes.Clone(val)
 		val[21]++
 
 		m.SetValue(val)