diff --git a/go.mod b/go.mod
index ef4c7b2ca8e17c4013f0916964597b43c9ae4615..3c61a83f1988b13762f38a90fb0abbceec8cbf0c 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ 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 v1.0.2
+	github.com/dubbogo/hessian2 v1.1.1
 	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 3af6b3eb0d163f358e622769edbe6b856823afac..09b3e7fd08c0e6d98c222f582c0a4673bbb92da5 100644
--- a/go.sum
+++ b/go.sum
@@ -5,8 +5,8 @@ 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 v1.0.2 h1:Ka9Z32ZszGAdCpgrGuZQmwkT0qe1pd3o9r7ERCDnSlQ=
-github.com/dubbogo/hessian2 v1.0.2/go.mod h1:XFGDn4oSZX26zkcfhkM/fCJrOqwQJxk/xgWW1KMJBKM=
+github.com/dubbogo/hessian2 v1.1.1 h1:X8UlNUvn/lqct2GKY37MFGnZ2f51HRndAQHk6+RMtqc=
+github.com/dubbogo/hessian2 v1.1.1/go.mod h1:XFGDn4oSZX26zkcfhkM/fCJrOqwQJxk/xgWW1KMJBKM=
 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=