diff --git a/Gopkg.lock b/Gopkg.lock
index 80cf09e..acff973 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -30,7 +30,7 @@
     "net/mux",
     "pool"
   ]
-  revision = "416571c55dbc32e13ce82c301a2a4b5a48ad7309"
+  revision = "280fa74053dee5311c46094f4bdefbf76d3fcbe2"
 
 [[projects]]
   branch = "frp"
diff --git a/server/service.go b/server/service.go
index 024b683..2f93f90 100644
--- a/server/service.go
+++ b/server/service.go
@@ -122,8 +122,8 @@ func NewService() (svr *Service, err error) {
 		return
 	}
 
-	svr.muxer = mux.NewMux()
-	go svr.muxer.Serve(ln)
+	svr.muxer = mux.NewMux(ln)
+	go svr.muxer.Serve()
 	ln = svr.muxer.DefaultListener()
 
 	svr.listener = frpNet.WrapLogListener(ln)
diff --git a/vendor/github.com/fatedier/golib/net/mux/mux.go b/vendor/github.com/fatedier/golib/net/mux/mux.go
index 07eec58..296392b 100644
--- a/vendor/github.com/fatedier/golib/net/mux/mux.go
+++ b/vendor/github.com/fatedier/golib/net/mux/mux.go
@@ -43,8 +43,9 @@ type Mux struct {
 	mu sync.RWMutex
 }
 
-func NewMux() (mux *Mux) {
+func NewMux(ln net.Listener) (mux *Mux) {
 	mux = &Mux{
+		ln:  ln,
 		lns: make([]*listener, 0),
 	}
 	return
@@ -123,15 +124,12 @@ func (mux *Mux) copyLns() []*listener {
 }
 
 // Serve handles connections from ln and multiplexes then across registered listeners.
-func (mux *Mux) Serve(ln net.Listener) error {
-	mux.mu.Lock()
-	mux.ln = ln
-	mux.mu.Unlock()
+func (mux *Mux) Serve() error {
 	for {
 		// Wait for the next connection.
 		// If it returns a temporary error then simply retry.
 		// If it returns any other error then exit immediately.
-		conn, err := ln.Accept()
+		conn, err := mux.ln.Accept()
 		if err, ok := err.(interface {
 			Temporary() bool
 		}); ok && err.Temporary() {