diff --git a/app/sim_test.go b/app/sim_test.go
index 93eb82d5f..b81ab57eb 100644
--- a/app/sim_test.go
+++ b/app/sim_test.go
@@ -17,8 +17,6 @@ import (
 	"github.com/cosmos/cosmos-sdk/baseapp"
 	"github.com/cosmos/cosmos-sdk/crypto/keys/ed25519"
 	"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
-	"github.com/cosmos/cosmos-sdk/simapp"
-	"github.com/cosmos/cosmos-sdk/simapp/helpers"
 	"github.com/cosmos/cosmos-sdk/store"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
@@ -35,6 +33,8 @@ import (
 	staking "github.com/cosmos/cosmos-sdk/x/staking/types"
 	ibctransfer "github.com/cosmos/ibc-go/v3/modules/apps/transfer/types"
 	ibchost "github.com/cosmos/ibc-go/v3/modules/core/24-host"
+	"github.com/cosmos/ibc-go/v3/testing/simapp"
+	"github.com/cosmos/ibc-go/v3/testing/simapp/helpers"
 
 	cert "github.com/certikfoundation/shentu/v2/x/cert/types"
 	cvm "github.com/certikfoundation/shentu/v2/x/cvm/types"