diff --git a/CMakeLists.txt b/CMakeLists.txt
index 35d90f762..04e8ad226 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,8 +1,8 @@
 cmake_minimum_required(VERSION 3.2)
 
 set(PROJECT_NAME shadowsocks-libev)
-set(RELEASE_DATE 2017-9-15)
-set(PROJECT_VERSION "3.1.0")
+set(RELEASE_DATE 2017-11-20)
+set(PROJECT_VERSION "3.1.1")
 set(PROJECT_DESC "a lightweight secured socks5 proxy")
 set(PROJECT_URL "https://shadowsocks.org")
 set(PROJECT_ISSUES_URL "https://github.com/shadowsocks/shadowsocks-libev")
diff --git a/Changes b/Changes
index 2a942d0da..2d5a81fae 100644
--- a/Changes
+++ b/Changes
@@ -1,3 +1,9 @@
+shadowsocks-libev (3.1.1-1) unstable; urgency=high
+
+  * Fix a security issue in ss-manager. (CVE-2017-15924)
+
+ -- Max Lv <max.c.lv@gmail.com>  Mon, 20 Nov 2017 12:13:04 +0800
+
 shadowsocks-libev (3.1.0-1) unstable; urgency=low
 
   * Replace libudns with libc-ares.
diff --git a/README.md b/README.md
index f899f17c1..a26324983 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ It is a port of [Shadowsocks](https://github.com/shadowsocks/shadowsocks)
 created by [@clowwindy](https://github.com/clowwindy), and maintained by
 [@madeye](https://github.com/madeye) and [@linusyang](https://github.com/linusyang).
 
-Current version: 3.1.0 | [Changelog](debian/changelog)
+Current version: 3.1.1 | [Changelog](debian/changelog)
 
 Travis CI: [![Travis CI](https://travis-ci.org/shadowsocks/shadowsocks-libev.svg?branch=master)](https://travis-ci.org/shadowsocks/shadowsocks-libev)
 
diff --git a/configure.ac b/configure.ac
index 33d66505b..1f61dae3b 100755
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@ dnl                                               -*- Autoconf -*-
 dnl Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.67])
-AC_INIT([shadowsocks-libev], [3.1.0], [max.c.lv@gmail.com])
+AC_INIT([shadowsocks-libev], [3.1.1], [max.c.lv@gmail.com])
 AC_CONFIG_SRCDIR([src/crypto.c])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_AUX_DIR(auto)
diff --git a/debian/changelog b/debian/changelog
index 2a942d0da..2d5a81fae 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+shadowsocks-libev (3.1.1-1) unstable; urgency=high
+
+  * Fix a security issue in ss-manager. (CVE-2017-15924)
+
+ -- Max Lv <max.c.lv@gmail.com>  Mon, 20 Nov 2017 12:13:04 +0800
+
 shadowsocks-libev (3.1.0-1) unstable; urgency=low
 
   * Replace libudns with libc-ares.
diff --git a/docker/alpine/Dockerfile b/docker/alpine/Dockerfile
index 8f6d9cc67..aa8ec0ad6 100644
--- a/docker/alpine/Dockerfile
+++ b/docker/alpine/Dockerfile
@@ -5,7 +5,7 @@
 FROM alpine
 MAINTAINER kev <noreply@datageek.info>
 
-ARG SS_VER=3.1.0
+ARG SS_VER=3.1.1
 ARG SS_URL=https://github.com/shadowsocks/shadowsocks-libev/releases/download/v$SS_VER/shadowsocks-libev-$SS_VER.tar.gz
 
 ENV SERVER_ADDR 0.0.0.0