diff --git a/go.mod b/go.mod
index e434dda0..a54d4881 100644
--- a/go.mod
+++ b/go.mod
@@ -15,7 +15,7 @@ require (
 	github.com/multiformats/go-multiaddr-net v0.1.2 // v0.1.1 => v0.1.2
 	github.com/multiformats/go-multihash v0.0.13 // indirect
 	github.com/nspcc-dev/hrw v1.0.9
-	github.com/nspcc-dev/neo-go v0.94.0-pre.0.20210301112733-3227de8050f8
+	github.com/nspcc-dev/neo-go v0.94.0-pre.0.20210312122023-f7d74190f53d
 	github.com/nspcc-dev/neofs-api-go v1.24.1-0.20210312074010-64505180b400
 	github.com/nspcc-dev/neofs-crypto v0.3.0
 	github.com/nspcc-dev/tzhash v1.4.0
diff --git a/go.sum b/go.sum
index 66151a54..1caea59d 100644
--- a/go.sum
+++ b/go.sum
@@ -121,6 +121,7 @@ github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/me
 github.com/go-yaml/yaml v2.1.0+incompatible/go.mod h1:w2MrLa16VYP0jy6N7M5kHaCkaLENm+P+Tv+MfurjSw0=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
+github.com/gogo/protobuf v1.3.1 h1:DqDEcV5aeaTmdFBePNpYsp3FlcVH/2ISVVM9Qf8PSls=
 github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
@@ -270,14 +271,15 @@ github.com/nspcc-dev/dbft v0.0.0-20191209120240-0d6b7568d9ae/go.mod h1:3FjXOoHmA
 github.com/nspcc-dev/dbft v0.0.0-20200117124306-478e5cfbf03a/go.mod h1:/YFK+XOxxg0Bfm6P92lY5eDSLYfp06XOdL8KAVgXjVk=
 github.com/nspcc-dev/dbft v0.0.0-20200219114139-199d286ed6c1/go.mod h1:O0qtn62prQSqizzoagHmuuKoz8QMkU3SzBoKdEvm3aQ=
 github.com/nspcc-dev/dbft v0.0.0-20200711144034-c526ccc6f570/go.mod h1:1FYQXSbb6/9HQIkoF8XO7W/S8N7AZRkBsgwbcXRvk0E=
-github.com/nspcc-dev/dbft v0.0.0-20210122071512-d9a728094f0d h1:uUaRysqa/9VtHETVARUlteqfbXAgwxR2nvUc4DzK4pI=
-github.com/nspcc-dev/dbft v0.0.0-20210122071512-d9a728094f0d/go.mod h1:I5D0W3tu3epdt2RMCTxS//HDr4S+OHRqajouQTOAHI8=
+github.com/nspcc-dev/dbft v0.0.0-20210302103605-cc75991b7cfb h1:UJRsgW5V0Td5oFLumYH3DepidjmH6Ek1uxWEkhe9RI8=
+github.com/nspcc-dev/dbft v0.0.0-20210302103605-cc75991b7cfb/go.mod h1:U8MSnEShH+o5hexfWJdze6uMFJteP0ko7J2frO7Yu1Y=
 github.com/nspcc-dev/hrw v1.0.9 h1:17VcAuTtrstmFppBjfRiia4K2wA/ukXZhLFS8Y8rz5Y=
 github.com/nspcc-dev/hrw v1.0.9/go.mod h1:l/W2vx83vMQo6aStyx2AuZrJ+07lGv2JQGlVkPG06MU=
 github.com/nspcc-dev/neo-go v0.73.1-pre.0.20200303142215-f5a1b928ce09/go.mod h1:pPYwPZ2ks+uMnlRLUyXOpLieaDQSEaf4NM3zHVbRjmg=
 github.com/nspcc-dev/neo-go v0.91.0/go.mod h1:G6HdOWvzQ6tlvFdvFSN/PgCzLPN/X/X4d5hTjFRUDcc=
-github.com/nspcc-dev/neo-go v0.94.0-pre.0.20210301112733-3227de8050f8 h1:9oaPafI3aSteb6o5tRcaHLQGTUq9+iKFzyHLQ+fB7yg=
-github.com/nspcc-dev/neo-go v0.94.0-pre.0.20210301112733-3227de8050f8/go.mod h1:6tixfAd+d8TIm05DA874j6t898G/fyqA2fHVJxkJCXQ=
+github.com/nspcc-dev/neo-go v0.94.0-pre.0.20210312122023-f7d74190f53d h1:Bbfz5Mz4ntBoz0UDYbBe8eaAkJDqTaTi7DnYuJSK61I=
+github.com/nspcc-dev/neo-go v0.94.0-pre.0.20210312122023-f7d74190f53d/go.mod h1:IrBT/UG3/Slhqgjge8r6zni5tNRsWmwwG9OnVdASheI=
+github.com/nspcc-dev/neofs-api-go v1.24.0/go.mod h1:G7dqincfdjBrAbL5nxVp82emF05fSVEqe59ICsoRDI8=
 github.com/nspcc-dev/neofs-api-go v1.24.1-0.20210312074010-64505180b400 h1:64Yw4WgKLoEedtjUL8BLVMVkpx7A0xFqnadD4FmX8Ks=
 github.com/nspcc-dev/neofs-api-go v1.24.1-0.20210312074010-64505180b400/go.mod h1:G7dqincfdjBrAbL5nxVp82emF05fSVEqe59ICsoRDI8=
 github.com/nspcc-dev/neofs-crypto v0.2.0/go.mod h1:F/96fUzPM3wR+UGsPi3faVNmFlA9KAEAUQR7dMxZmNA=
diff --git a/pkg/morph/client/client.go b/pkg/morph/client/client.go
index c2329e9e..61407c2c 100644
--- a/pkg/morph/client/client.go
+++ b/pkg/morph/client/client.go
@@ -69,6 +69,13 @@ func (c *Client) Invoke(contract util.Uint160, fee fixedn.Fixed8, method string,
 		},
 	}
 
+	cosignerAcc := []client.SignerAccount{
+		{
+			Signer:  cosigner[0],
+			Account: c.acc,
+		},
+	}
+
 	resp, err := c.client.InvokeFunction(contract, method, params, cosigner)
 	if err != nil {
 		return err
@@ -82,7 +89,7 @@ func (c *Client) Invoke(contract util.Uint160, fee fixedn.Fixed8, method string,
 
 	sysFee := resp.GasConsumed + int64(fee) // consumed gas + extra fee
 
-	txHash, err := c.client.SignAndPushInvocationTx(script, c.acc, sysFee, 0, cosigner)
+	txHash, err := c.client.SignAndPushInvocationTx(script, c.acc, sysFee, 0, cosignerAcc)
 	if err != nil {
 		return err
 	}