diff --git a/CHANGELOG b/CHANGELOG
index 9f7f636..245b88c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,7 +1,7 @@
 proxy更新日志
 v4.9
 1.修复了HTTP Basic代理返回不合适的头部,导致浏览器不会弹框,个别代理插件无法认证的问题.
-2.mux内网穿透切换smux到yamux.
+2.内网穿透切换smux到yamux.
 
 
 v4.8
diff --git a/services/tunnel_bridge.go b/services/tunnel_bridge.go
index 333523d..8352d15 100644
--- a/services/tunnel_bridge.go
+++ b/services/tunnel_bridge.go
@@ -5,12 +5,14 @@ import (
 	"fmt"
 	logger "log"
 	"net"
+	"os"
 	"strconv"
 	"time"
 
 	"github.com/snail007/goproxy/utils"
 
-	"github.com/xtaci/smux"
+	//"github.com/xtaci/smux"
+	smux "github.com/hashicorp/yamux"
 )
 
 type ServerConn struct {
@@ -89,10 +91,12 @@ func (s *TunnelBridge) callback(inConn net.Conn) {
 	var err error
 	//s.log.Printf("connection from %s ", inConn.RemoteAddr())
 	sess, err := smux.Server(inConn, &smux.Config{
-		KeepAliveInterval: 10 * time.Second,
-		KeepAliveTimeout:  time.Duration(*s.cfg.Timeout) * time.Second,
-		MaxFrameSize:      4096,
-		MaxReceiveBuffer:  4194304,
+		AcceptBacklog:          256,
+		EnableKeepAlive:        true,
+		KeepAliveInterval:      9 * time.Second,
+		ConnectionWriteTimeout: 3 * time.Second,
+		MaxStreamWindowSize:    512 * 1024,
+		LogOutput:              os.Stderr,
 	})
 	if err != nil {
 		s.log.Printf("new mux server conn error,ERR:%s", err)
diff --git a/services/tunnel_client.go b/services/tunnel_client.go
index 29af4be..120d450 100644
--- a/services/tunnel_client.go
+++ b/services/tunnel_client.go
@@ -6,11 +6,13 @@ import (
 	"io"
 	logger "log"
 	"net"
+	"os"
 	"time"
 
 	"github.com/snail007/goproxy/utils"
 
-	"github.com/xtaci/smux"
+	//"github.com/xtaci/smux"
+	smux "github.com/hashicorp/yamux"
 )
 
 type TunnelClient struct {
@@ -139,10 +141,12 @@ func (s *TunnelClient) GetConn() (conn net.Conn, err error) {
 	if err == nil {
 		conn = net.Conn(&_conn)
 		c, e := smux.Client(conn, &smux.Config{
-			KeepAliveInterval: 10 * time.Second,
-			KeepAliveTimeout:  time.Duration(*s.cfg.Timeout) * time.Second,
-			MaxFrameSize:      4096,
-			MaxReceiveBuffer:  4194304,
+			AcceptBacklog:          256,
+			EnableKeepAlive:        true,
+			KeepAliveInterval:      9 * time.Second,
+			ConnectionWriteTimeout: 3 * time.Second,
+			MaxStreamWindowSize:    512 * 1024,
+			LogOutput:              os.Stderr,
 		})
 		if e != nil {
 			s.log.Printf("new mux client conn error,ERR:%s", e)
diff --git a/services/tunnel_server.go b/services/tunnel_server.go
index 6c4086e..91f7306 100644
--- a/services/tunnel_server.go
+++ b/services/tunnel_server.go
@@ -6,6 +6,7 @@ import (
 	"io"
 	logger "log"
 	"net"
+	"os"
 	"runtime/debug"
 	"strconv"
 	"strings"
@@ -13,7 +14,8 @@ import (
 
 	"github.com/snail007/goproxy/utils"
 
-	"github.com/xtaci/smux"
+	//"github.com/xtaci/smux"
+	smux "github.com/hashicorp/yamux"
 )
 
 type TunnelServer struct {
@@ -288,10 +290,12 @@ func (s *TunnelServer) GetConn() (conn net.Conn, err error) {
 	if err == nil {
 		conn = net.Conn(&_conn)
 		c, e := smux.Client(conn, &smux.Config{
-			KeepAliveInterval: 10 * time.Second,
-			KeepAliveTimeout:  time.Duration(*s.cfg.Timeout) * time.Second,
-			MaxFrameSize:      4096,
-			MaxReceiveBuffer:  4194304,
+			AcceptBacklog:          256,
+			EnableKeepAlive:        true,
+			KeepAliveInterval:      9 * time.Second,
+			ConnectionWriteTimeout: 3 * time.Second,
+			MaxStreamWindowSize:    512 * 1024,
+			LogOutput:              os.Stderr,
 		})
 		if e != nil {
 			s.log.Printf("new mux client conn error,ERR:%s", e)