diff --git a/go.mod b/go.mod
index 5b88a90..3c0d675 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,7 @@ module git.tetele.net/tgo/wechat
 
 go 1.16
 
-require github.com/json-iterator/go v1.1.12
+require (
+	git.tetele.net/tgo/helper v0.3.2 // indirect
+	github.com/json-iterator/go v1.1.12
+)
diff --git a/go.sum b/go.sum
index 5ad85e0..b3309fd 100644
--- a/go.sum
+++ b/go.sum
@@ -1,3 +1,5 @@
+git.tetele.net/tgo/helper v0.3.2 h1:3Pd3Ih3Ux+zFSjNZZv+4MSsVQiZ5HOfQmSus5+7rKR0=
+git.tetele.net/tgo/helper v0.3.2/go.mod h1:89mQwyfqZ+t8YXiVwzSxA70gLlUNqoZGDEUxvV46jXk=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=