diff --git a/python/src/aiconfig/schema.py b/python/src/aiconfig/schema.py
index 0a7a465b7..898786c68 100644
--- a/python/src/aiconfig/schema.py
+++ b/python/src/aiconfig/schema.py
@@ -228,6 +228,7 @@ class ConfigMetadata(BaseModel):
 
     class Config:
         extra = "allow"
+        protected_namespaces = ()
 
 
 class AIConfig(BaseModel):