diff --git a/GameServer.cs b/GameServer.cs
index e64c484..eb405eb 100644
--- a/GameServer.cs
+++ b/GameServer.cs
@@ -12,7 +12,16 @@ namespace MSCO.Server;
 /// </summary>
 public sealed class GameServer
 {
-    public const string ModVersion = "2.8";   // muss mit MSCO.ModVersion übereinstimmen
+    /// <summary>Netzwerk-Version (= MSCO.ProtocolVersion der Mod). Mods 2.8.x passen dazu (kleine Updates).</summary>
+    public const string ModVersion = "2.8";
+
+    /// <summary>"2.8.3" -> "2.8": kleine Mod-Updates (dritte Stelle) sind kompatibel.</summary>
+    public static string Protocol(string version)
+    {
+        if (string.IsNullOrEmpty(version)) return "";
+        string[] parts = version.Trim().Split('.');
+        return parts.Length >= 2 ? parts[0] + "." + parts[1] : version.Trim();
+    }
     public const int ServerId = 0;             // Absender-ID des Servers; Spieler bekommen 1, 2, ...
 
     static string[] SaveFiles => SaveStore.SaveFiles;
@@ -510,7 +519,7 @@ public sealed class GameServer
         c.SteamId = steamId != 0 ? steamId.ToString() : "name:" + c.Name.ToLowerInvariant();
 
         // Andere Version ist erlaubt (der Spieler wurde in der Mod schon gewarnt), nur vermerken
-        if (version != ModVersion) Log($"{c.Name} uses MSCO {version} (server {ModVersion}) - syncing may not work correctly");
+        if (Protocol(version) != ModVersion) Log($"{c.Name} uses MSCO {version} (server {ModVersion}) - syncing may not work correctly");
         if (config.BannedSteamIds.Contains(c.SteamId)) { Reject(c, "You are banned from this server"); return; }
         if (JoinedCount >= config.MaxPlayers) { Reject(c, "Server is full"); return; }