diff --git a/CHANGES b/CHANGES
index 5c5aba5f..67e0faae 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+2.5.7 2015-09-19
+- Fix repeated IV.
+
 2.5.6 2015-08-19
 - Add portable mode. Create shadowsocks_portable_mode.txt to use it
 - Support server reorder
diff --git a/README.md b/README.md
index 83bff1ef..b4952dd8 100644
--- a/README.md
+++ b/README.md
@@ -75,8 +75,8 @@ Visual Studio 2015 is required.
 GPLv3
 
 
-[Appveyor]:       https://ci.appveyor.com/project/clowwindy/shadowsocks-csharp
-[Build Status]:   https://ci.appveyor.com/api/projects/status/gknc8l1lxy423ehv/branch/master
+[Appveyor]:       https://ci.appveyor.com/project/icylogic/shadowsocks-windows-l9mwe
+[Build Status]:   https://ci.appveyor.com/api/projects/status/ytllr9yjkbpc2tu2/branch/master
 [latest release]: https://github.com/shadowsocks/shadowsocks-csharp/releases
 [GFWList]:        https://github.com/gfwlist/gfwlist
 [Servers]:        https://github.com/shadowsocks/shadowsocks/wiki/Ports-and-Clients#linux--server-side
diff --git a/shadowsocks-csharp/Controller/Service/UpdateChecker.cs b/shadowsocks-csharp/Controller/Service/UpdateChecker.cs
index b2ef20dc..35bcf4c7 100644
--- a/shadowsocks-csharp/Controller/Service/UpdateChecker.cs
+++ b/shadowsocks-csharp/Controller/Service/UpdateChecker.cs
@@ -18,7 +18,7 @@ namespace Shadowsocks.Controller
         public string LatestVersionURL;
         public event EventHandler NewVersionFound;
 
-        public const string Version = "2.5.6";
+        public const string Version = "2.5.7";
 
         public void CheckUpdate(Configuration config)
         {