diff --git a/goutils/proto_build/tpls/auto_grpc_nacos.tpl b/goutils/proto_build/tpls/auto_grpc_nacos.tpl
index 50e0a2b..65ca5ea 100644
--- a/goutils/proto_build/tpls/auto_grpc_nacos.tpl
+++ b/goutils/proto_build/tpls/auto_grpc_nacos.tpl
@@ -76,6 +76,8 @@ func Auto{{.ClientName}}ClientEx(ctx context.Context, opts ...grpc.DialOption) (
 		return nil, fmt.Errorf("nameClient must be init. call")
     }
 
+	opts = append(opts, grpc.WithTransportCredentials(insecure.NewCredentials()))
+
 	sel := vo.SelectOneHealthInstanceParam{
 		ServiceName: "{{.GrpcServiceName}}",
 		GroupName:   groupName,