diff --git a/shadowsocks-csharp/Controller/HttpRequest/UpdateChecker.cs b/shadowsocks-csharp/Controller/HttpRequest/UpdateChecker.cs
index 306eb475ca9..a33d82cc389 100644
--- a/shadowsocks-csharp/Controller/HttpRequest/UpdateChecker.cs
+++ b/shadowsocks-csharp/Controller/HttpRequest/UpdateChecker.cs
@@ -22,7 +22,7 @@ public class UpdateChecker : HttpRequest
 
         public const string Name = @"ShadowsocksR";
         public const string Copyright = @"Copyright © HMBSbige 2019 & BreakWa11 2017. Fork from Shadowsocks by clowwindy";
-        public const string Version = @"5.1.7";
+        public const string Version = @"5.1.7.1";
 
         public const string FullVersion = Version +
 #if IsDotNetCore