diff --git a/shadowsocks-csharp/Controller/UpdateChecker.cs b/shadowsocks-csharp/Controller/UpdateChecker.cs
index 8d0f283e..03a17079 100755
--- a/shadowsocks-csharp/Controller/UpdateChecker.cs
+++ b/shadowsocks-csharp/Controller/UpdateChecker.cs
@@ -18,7 +18,7 @@ namespace Shadowsocks.Controller
         public string LatestVersionURL;
         public event EventHandler NewVersionFound;
 
-        public const string Version = "2.3.1";
+        public const string Version = "2.4";
 
         public void CheckUpdate(Configuration config)
         {