diff --git a/ShadowsocksX-NG/LaunchAgentUtils.swift b/ShadowsocksX-NG/LaunchAgentUtils.swift
index b53611f..712f297 100644
--- a/ShadowsocksX-NG/LaunchAgentUtils.swift
+++ b/ShadowsocksX-NG/LaunchAgentUtils.swift
@@ -9,7 +9,7 @@
 import Foundation
 
 let SS_LOCAL_VERSION = "3.0.5"
-let KCPTUN_CLIENT_VERSION = "20170117"
+let KCPTUN_CLIENT_VERSION = "20170322"
 let PRIVOXY_VERSION = "3.0.26.static"
 let APP_SUPPORT_DIR = "/Library/Application Support/ShadowsocksX-NG/"
 let LAUNCH_AGENT_DIR = "/Library/LaunchAgents/"
diff --git a/ShadowsocksX-NG/install_kcptun.sh b/ShadowsocksX-NG/install_kcptun.sh
index cffd51f..f30b4b4 100755
--- a/ShadowsocksX-NG/install_kcptun.sh
+++ b/ShadowsocksX-NG/install_kcptun.sh
@@ -6,10 +6,13 @@
 #  Created by 邱宇舟 on 2017/1/11.
 #  Copyright © 2017年 qiuyuzhou. All rights reserved.
 
+VERSION="20170322"
+
 cd `dirname "${BASH_SOURCE[0]}"`
-mkdir -p "$HOME/Library/Application Support/ShadowsocksX-NG/kcptun_20170117"
-cp -f kcptun_client "$HOME/Library/Application Support/ShadowsocksX-NG/kcptun_20170117/"
+
+mkdir -p "$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 "$HOME/Library/Application Support/ShadowsocksX-NG/kcptun_20170117/kcptun_client" "$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"
 
 echo "install kcptun done"
diff --git a/ShadowsocksX-NG/kcptun_client b/ShadowsocksX-NG/kcptun_client
index 4352b2a..0ed88fc 100755
Binary files a/ShadowsocksX-NG/kcptun_client and b/ShadowsocksX-NG/kcptun_client differ