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
Binary files a/go.sum and b/go.sum differ
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
 	}