diff --git a/redbot/core/config.py b/redbot/core/config.py
index 007c6833679..3b3f921d032 100644
--- a/redbot/core/config.py
+++ b/redbot/core/config.py
@@ -656,6 +656,7 @@ class Config(metaclass=ConfigMeta):
         "custom_groups",
         "_lock_cache",
         "__weakref__",
+        "__dict__",
     )
 
     def __init__(