diff --git a/go.mod b/go.mod
index 8fd3c215fb..8227fce95e 100644
--- a/go.mod
+++ b/go.mod
@@ -2,8 +2,8 @@ module github.com/apache/dubbo-go
 
 require (
 	github.com/dubbogo/getty v1.0.7
-	github.com/dubbogo/gost v1.0.0
-	github.com/dubbogo/hessian2 v1.1.2
+	github.com/dubbogo/gost v1.1.1
+	github.com/dubbogo/hessian2 v1.2.0
 	github.com/magiconair/properties v1.8.1
 	github.com/pkg/errors v0.8.1
 	github.com/samuel/go-zookeeper v0.0.0-20180130194729-c4fab1ac1bec
diff --git a/go.sum b/go.sum
index 859e9aab1c..d44c5b2780 100644
--- a/go.sum
+++ b/go.sum
@@ -3,10 +3,10 @@ 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=
 github.com/dubbogo/getty v1.0.7 h1:5Hg+JwXyCKm9Yr4yJkm98ahhnoa8c2h6br5QJxwQ+YU=
 github.com/dubbogo/getty v1.0.7/go.mod h1:cRMSuoCmwc5lULFFnYZTxyCfZhObmRTNbS7XRnPNHSo=
-github.com/dubbogo/gost v1.0.0 h1:obKvpJYdrIY2BidHYwYoj2E50OtwCDqVVVTcH2nnhAY=
-github.com/dubbogo/gost v1.0.0/go.mod h1:R7wZm1DrmrKGr50mBZVcg6C9ekG8aL5hP+sgWcIDwQg=
-github.com/dubbogo/hessian2 v1.1.2 h1:SRkPzIwVv2D+ZUOCE2XuI5kANoL01ShhAheLcc3usJE=
-github.com/dubbogo/hessian2 v1.1.2/go.mod h1:XFGDn4oSZX26zkcfhkM/fCJrOqwQJxk/xgWW1KMJBKM=
+github.com/dubbogo/gost v1.1.1 h1:JCM7vx5edPIjDA5ovJTuzEEXuw2t7xLyrlgi2mi5jHI=
+github.com/dubbogo/gost v1.1.1/go.mod h1:R7wZm1DrmrKGr50mBZVcg6C9ekG8aL5hP+sgWcIDwQg=
+github.com/dubbogo/hessian2 v1.2.0 h1:5wFYuMzzRhneUAPbVBVKubIknrEjUM/B76vievYD0Vw=
+github.com/dubbogo/hessian2 v1.2.0/go.mod h1:7EohF3mE7xmZcj43nP172sapRHOEifcV/jwyHhG4SaY=
 github.com/golang/snappy v0.0.1 h1:Qgr9rKW7uDUkrbSmQeiDsGa8SjGyCOGtuasMWwvp2P4=
 github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=