diff --git a/ShadowsocksX-NG/LaunchAgentUtils.swift b/ShadowsocksX-NG/LaunchAgentUtils.swift
index 5200443..d397629 100644
--- a/ShadowsocksX-NG/LaunchAgentUtils.swift
+++ b/ShadowsocksX-NG/LaunchAgentUtils.swift
@@ -9,7 +9,7 @@
 import Foundation
 
 let SS_LOCAL_VERSION = "3.1.3"
-let KCPTUN_CLIENT_VERSION = "20170322"
+let KCPTUN_CLIENT_VERSION = "v20170718"
 let PRIVOXY_VERSION = "3.0.26.static"
 let SIMPLE_OBFS_VERSION = "0.0.2"
 let APP_SUPPORT_DIR = "/Library/Application Support/ShadowsocksX-NG/"
diff --git a/ShadowsocksX-NG/install_kcptun.sh b/ShadowsocksX-NG/install_kcptun.sh
index f30b4b4..6615fbb 100755
--- a/ShadowsocksX-NG/install_kcptun.sh
+++ b/ShadowsocksX-NG/install_kcptun.sh
@@ -6,13 +6,19 @@
 #  Created by 邱宇舟 on 2017/1/11.
 #  Copyright © 2017年 qiuyuzhou. All rights reserved.
 
-VERSION="20170322"
+# https://github.com/shadowsocks/kcptun/releases
+
+VERSION="v20170718"
 
 cd `dirname "${BASH_SOURCE[0]}"`
 
 mkdir -p "$HOME/Library/Application Support/ShadowsocksX-NG/kcptun_$VERSION"
 cp -f kcptun_client "$HOME/Library/Application Support/ShadowsocksX-NG/kcptun_$VERSION/"
+
 rm -f "$HOME/Library/Application Support/ShadowsocksX-NG/kcptun_client"
 ln -s "$HOME/Library/Application Support/ShadowsocksX-NG/kcptun_$VERSION/kcptun_client" "$HOME/Library/Application Support/ShadowsocksX-NG/kcptun_client"
 
+rm -f "$HOME/Library/Application Support/ShadowsocksX-NG/plugins/kcptun"
+ln -s "$HOME/Library/Application Support/ShadowsocksX-NG/kcptun_$VERSION/kcptun_client" "$HOME/Library/Application Support/ShadowsocksX-NG/plugins/kcptun"
+
 echo "install kcptun done"
diff --git a/ShadowsocksX-NG/kcptun_client b/ShadowsocksX-NG/kcptun_client
index 0ed88fc..ccb973e 100755
Binary files a/ShadowsocksX-NG/kcptun_client and b/ShadowsocksX-NG/kcptun_client differ