diff --git a/src/StardewModdingAPI/StardewModdingAPI.config.json b/src/StardewModdingAPI/StardewModdingAPI.config.json
index 432a40e5..4e871636 100644
--- a/src/StardewModdingAPI/StardewModdingAPI.config.json
+++ b/src/StardewModdingAPI/StardewModdingAPI.config.json
@@ -31,6 +31,11 @@ This file contains advanced configuration for SMAPI. You generally shouldn't cha
    * recommended and may destabilise your game.
    */
   "DisabledMods": [
+    {
+      "Name": "Modder Serialization Utility",
+      "ID": [ "SerializerUtils-0-1" ],
+      "ReasonPhrase": "it's no longer used by any mods, and is no longer maintained."
+    },
     {
       "Name": "StarDustCore",
       "ID": [ "StarDustCore" ],