diff --git a/shadowsocks-csharp/Controller/ShadowsocksController.cs b/shadowsocks-csharp/Controller/ShadowsocksController.cs
index 372b923b..b770ede1 100644
--- a/shadowsocks-csharp/Controller/ShadowsocksController.cs
+++ b/shadowsocks-csharp/Controller/ShadowsocksController.cs
@@ -101,6 +101,10 @@ namespace Shadowsocks.Controller
 
             ProgramUpdated += (o, e) =>
             {
+                // version update precedures
+                if (e.OldVersion == "4.3.0.0" || e.OldVersion == "4.3.1.0")
+                    _config.geositeDirectGroups.Add("private");
+
                 logger.Info($"Updated from {e.OldVersion} to {e.NewVersion}");
             };
         }
diff --git a/shadowsocks-csharp/Model/Configuration.cs b/shadowsocks-csharp/Model/Configuration.cs
index b955e0f7..9e4cabda 100644
--- a/shadowsocks-csharp/Model/Configuration.cs
+++ b/shadowsocks-csharp/Model/Configuration.cs
@@ -86,12 +86,13 @@ namespace Shadowsocks.Model
             geositeUrl = "";
             geositeDirectGroups = new List<string>()
             {
+                "private",
                 "cn",
-                "geolocation-!cn@cn"
+                "geolocation-!cn@cn",
             };
             geositeProxiedGroups = new List<string>()
             {
-                "geolocation-!cn"
+                "geolocation-!cn",
             };
             geositePreferDirect = false;
             userAgent = "ShadowsocksWindows/$version";
@@ -308,6 +309,7 @@ namespace Shadowsocks.Model
         public static void ResetGeositeDirectGroup(ref List<string> geositeDirectGroups)
         {
             geositeDirectGroups.Clear();
+            geositeDirectGroups.Add("private");
             geositeDirectGroups.Add("cn");
             geositeDirectGroups.Add("geolocation-!cn@cn");
         }