diff --git a/server.py b/server.py
index fb7db407c..10c2698b5 100644
--- a/server.py
+++ b/server.py
@@ -56,7 +56,7 @@ async def deprecation_warning(request: web.Request, handler):
     """Middleware to warn about deprecated frontend API paths"""
     path = request.path
 
-    if path.startswith("/scripts/ui"):
+    if path.startswith("/scripts/ui") or path.startswith("/extensions/core/"):
         # Only warn once per unique file path
         if path not in _deprecated_paths_warned:
             _deprecated_paths_warned.add(path)