diff --git a/CHANGES b/CHANGES
index 269184e2..657aca09 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+4.0.6 2017-09-09
+- SIP002 support
+- SIP003 support
+
 4.0.5 2017-08-09
 - Fix crash when user-wininet.json fail to parse. (#1178)
 - Bug fixes and improvements.
diff --git a/shadowsocks-csharp/Controller/Service/UpdateChecker.cs b/shadowsocks-csharp/Controller/Service/UpdateChecker.cs
index 3aba67e9..939c6051 100644
--- a/shadowsocks-csharp/Controller/Service/UpdateChecker.cs
+++ b/shadowsocks-csharp/Controller/Service/UpdateChecker.cs
@@ -24,7 +24,7 @@ namespace Shadowsocks.Controller
         public string LatestVersionLocalName;
         public event EventHandler CheckUpdateCompleted;
 
-        public const string Version = "4.0.5";
+        public const string Version = "4.0.6";
 
         private class CheckUpdateTimer : System.Timers.Timer
         {