diff --git a/TLM/TLM/Resources/incompatible_mods.txt b/TLM/TLM/Resources/incompatible_mods.txt
index 9ae2bce9e..1e6d72a01 100644
--- a/TLM/TLM/Resources/incompatible_mods.txt
+++ b/TLM/TLM/Resources/incompatible_mods.txt
@@ -48,7 +48,6 @@
 1348361731;Traffic Manager: President Edition ALPHA/DEBUG
 1546870472;Traffic Manager: President Edition (Industries Compatible)
 1556669944;CSM
-1558438291;Cities Multiplayer Mod (CSM) [Beta]
 1581695572;Traffic Manager: President Edition
 1604291910;498363759 Traffic Manager + Improved AI
 1628112268;RightTurnNoStop
@@ -56,7 +55,6 @@
 1806963141;TM:PE LABS
 1841616225;CSM
 1957033250;Traffic Manager: President Edition (Industries Compatible)
-2021598295;1558438291 [Beta] CSM - Cities_ Skylines Multiplayer
 2027716634;CitiesSkylinesMultiplayer_2002.2.0
 2030131871;CSM
 2080356971;CSM
@@ -87,4 +85,4 @@
 2781822295;交通管理器 汉化版TMPE_V11_STABLE
 2782552305;CSM
 667342976;Loading Screen Mod
-833779378;Loading Screen Mod Test
\ No newline at end of file
+833779378;Loading Screen Mod Test
diff --git a/TLM/TLM/Util/ModsCompatibilityChecker.cs b/TLM/TLM/Util/ModsCompatibilityChecker.cs
index fbcc690f1..19798e4d3 100644
--- a/TLM/TLM/Util/ModsCompatibilityChecker.cs
+++ b/TLM/TLM/Util/ModsCompatibilityChecker.cs
@@ -25,6 +25,8 @@ public class ModsCompatibilityChecker {
         // parsed contents of incompatible_mods.txt
         private readonly Dictionary<ulong, string> knownIncompatibleMods;
         private readonly HashSet<string> gameBreaking;
+        private readonly HashSet<ulong> compatibilityWhitelistIds;
+        private readonly HashSet<string> compatibilityWhitelistNames;
 
         public ModsCompatibilityChecker() {
             knownIncompatibleMods = LoadListOfIncompatibleMods();
@@ -32,9 +34,15 @@ public ModsCompatibilityChecker() {
                 "Cities: Skylines Multiplayer",
                 "CSM",
                 "Cities Skylines Multiplayer (CSM)",
-                "Cities: Skylines Multiplayer (CSM) [Beta]",
                 "Harmony (redesigned)",
             });
+            compatibilityWhitelistIds = new HashSet<ulong>(new[] {
+                1558438291uL,
+            });
+            compatibilityWhitelistNames = new HashSet<string>(new[] {
+                "CSM.TmpeSync",
+                "Cities: Skylines Multiplayer (CSM) [Beta]",
+            });
         }
 
         /// <summary>
@@ -100,13 +108,16 @@ private Dictionary<PluginInfo, string> ScanForIncompatibleMods() {
                     string strWorkshopId = isLocal ? "(local)" : workshopID.ToString();
                     string strIncompatible = " ";
 
-                    if (knownIncompatibleMods.ContainsKey(workshopID)) {
+                    bool isWhitelisted = compatibilityWhitelistIds.Contains(workshopID) ||
+                                          compatibilityWhitelistNames.Contains(strModName);
+
+                    if (!isWhitelisted && knownIncompatibleMods.ContainsKey(workshopID)) {
                         strIncompatible = "!";
                         if (checkKnown && (!filterToEnabled || mod.isEnabled)) {
                             Debug.Log("[TM:PE] Incompatible mod detected: " + strModName);
                             results.Add(mod, strModName);
                         }
-                    } else if (gameBreaking.Contains(strModName)) {
+                    } else if (!isWhitelisted && gameBreaking.Contains(strModName)) {
                         strIncompatible = "!";
                         Debug.Log("[TM:PE] Incompatible, potentially game breaking mod detected: " + strModName);
                         results.Add(mod, strModName);