diff --git a/go.mod b/go.mod
index 45cf064bdf992486ca2371775517bd309687bf19..793fe406ad4358f3509994741c33ececfb275611 100644
--- a/go.mod
+++ b/go.mod
@@ -4,10 +4,8 @@ require (
 	github.com/AlexStocks/getty v0.0.0-20190513203438-4a52b6874223
 	github.com/AlexStocks/goext v0.3.2
 	github.com/AlexStocks/log4go v1.0.2
-	github.com/dubbogo/hessian2 v0.0.0-20190513195500-efce02944002
+	github.com/dubbogo/hessian2 v0.0.0-20190515104320-57ac2e777dc6
 	github.com/juju/errors v0.0.0-20190207033735-e65537c515d7
-	github.com/montanaflynn/stats v0.5.0
-	github.com/prometheus/common v0.0.0-20181126121408-4724e9255275
 	github.com/samuel/go-zookeeper v0.0.0-20180130194729-c4fab1ac1bec
 	github.com/stretchr/testify v1.3.0
 	github.com/tevino/abool v0.0.0-20170917061928-9b9efcf221b5
diff --git a/go.sum b/go.sum
index 46219102e3c2f445853950af42d65eeca5d3dfed..bc22846cb1e5d7ea6b0d0b6b337d9cbe35694f3e 100644
--- a/go.sum
+++ b/go.sum
@@ -24,8 +24,8 @@ 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/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
-github.com/dubbogo/hessian2 v0.0.0-20190513195500-efce02944002 h1:qtXH4fHzFh1ezGWIdVrfIYxbaCUqbDpUwu2xIjnkw6I=
-github.com/dubbogo/hessian2 v0.0.0-20190513195500-efce02944002/go.mod h1:v+gfInE8fm/k3Fjkb2oUCKSO9LKbWvf+PtweEI89BmI=
+github.com/dubbogo/hessian2 v0.0.0-20190515104320-57ac2e777dc6 h1:qFg1/KkHq4W/c5/3sagBNuMT7VjTiMQGIqknIlnPhu0=
+github.com/dubbogo/hessian2 v0.0.0-20190515104320-57ac2e777dc6/go.mod h1:v+gfInE8fm/k3Fjkb2oUCKSO9LKbWvf+PtweEI89BmI=
 github.com/fatih/set v0.2.1/go.mod h1:+RKtMCH+favT2+3YecHGxcc0b4KyVWA1QWWJUs4E0CI=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
@@ -82,8 +82,6 @@ github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0j
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
-github.com/montanaflynn/stats v0.5.0 h1:2EkzeTSqBB4V4bJwWrt5gIIrZmpJBcoIRGS2kWLgzmk=
-github.com/montanaflynn/stats v0.5.0/go.mod h1:wL8QJuTMNUDYhXwkmfOly8iTdp5TEcJFWZD2D7SIkUc=
 github.com/name5566/leaf v0.0.0-20181103040206-1364c176dfbd h1:22rhYEzttbrnKjgYh5pifnDluXHHcJ3uSOi2l8Nw+9A=
 github.com/name5566/leaf v0.0.0-20181103040206-1364c176dfbd/go.mod h1:JrOIxq3vDxvtuEI7Kmm2yqkuBfuT9DMLFMnCyYHLaKM=
 github.com/name5566/leaf v0.0.0-20181103040206-1364c176dfbd/go.mod h1:JrOIxq3vDxvtuEI7Kmm2yqkuBfuT9DMLFMnCyYHLaKM=