diff --git a/go.mod b/go.mod
index cad3379..41f717a 100644
--- a/go.mod
+++ b/go.mod
@@ -3,12 +3,13 @@ module github.com/fangdingjun/obfssh
 go 1.13
 
 require (
-	github.com/bgentry/speakeasy v0.1.0
+	github.com/bgentry/speakeasy v0.1.0 // indirect
 	github.com/containerd/console v1.0.0
 	github.com/fangdingjun/go-log/v5 v5.0.0
 	github.com/fangdingjun/protolistener v0.0.0-20200701071613-b79ebce338af
 	github.com/fangdingjun/socks-go v0.0.0-20180926100003-fc6f0a9ee1f4
 	github.com/go-yaml/yaml v2.1.0+incompatible
+	github.com/gorilla/websocket v1.4.2
 	github.com/kr/fs v0.1.0
 	github.com/pkg/sftp v1.11.0
 	golang.org/x/crypto v0.0.0-20200709230013-948cd5f35899
diff --git a/go.sum b/go.sum
index 770caf4..05549b8 100644
--- a/go.sum
+++ b/go.sum
@@ -9,6 +9,8 @@ github.com/fangdingjun/protolistener v0.0.0-20200701071613-b79ebce338af h1:ktdWT
 github.com/fangdingjun/protolistener v0.0.0-20200701071613-b79ebce338af/go.mod h1:WYiFoA3d+VfM47p+FHCbDdnKR7eedUmUdwd8c07XT/0=
 github.com/fangdingjun/socks-go v0.0.0-20180926100003-fc6f0a9ee1f4/go.mod h1:0P4kTlyyh76uY1Li3cyw4pOIKGL9RmXXWTQYFLS1ZaM=
 github.com/go-yaml/yaml v2.1.0+incompatible/go.mod h1:w2MrLa16VYP0jy6N7M5kHaCkaLENm+P+Tv+MfurjSw0=
+github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
+github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/kr/fs v0.1.0/go.mod h1:FFnZGqtBN9Gxj7eW1uZ42v5BccTP0vu6NEaFoC2HwRg=
 github.com/pires/go-proxyproto v0.0.0-20190111085350-4d51b51e3bfc/go.mod h1:6/gX3+E/IYGa0wMORlSMla999awQFdbaeQCHjSMKIzY=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=