diff --git a/kcptun/Dockerfile b/kcptun/Dockerfile
index 32e1e81..cf280f0 100644
--- a/kcptun/Dockerfile
+++ b/kcptun/Dockerfile
@@ -5,7 +5,7 @@
 FROM alpine
 MAINTAINER kev <noreply@easypi.info>
 
-ENV KCPTUN_VERSION 20160811
+ENV KCPTUN_VERSION 20160902
 ENV KCPTUN_FILE kcptun-linux-amd64-${KCPTUN_VERSION}.tar.gz
 ENV KCPTUN_URL https://github.com/xtaci/kcptun/releases/download/v${KCPTUN_VERSION}/${KCPTUN_FILE}