diff --git a/packages/openai-sdk-python/src/supermemory_openai/middleware.py b/packages/openai-sdk-python/src/supermemory_openai/middleware.py
index 4f6dc8ec0..12100065c 100644
--- a/packages/openai-sdk-python/src/supermemory_openai/middleware.py
+++ b/packages/openai-sdk-python/src/supermemory_openai/middleware.py
@@ -554,9 +554,12 @@ async def wait_for_background_tasks(self, timeout: Optional[float] = 10.0) -> No
                 f"Background tasks did not complete within {timeout}s timeout"
             )
             # Cancel remaining tasks
-            for task in self._background_tasks:
-                if not task.done():
-                    task.cancel()
+            tasks_to_cancel = [task for task in self._background_tasks if not task.done()]
+            for task in tasks_to_cancel:
+                task.cancel()
+
+            if tasks_to_cancel:
+                await asyncio.gather(*tasks_to_cancel, return_exceptions=True)
             raise
 
     def cancel_background_tasks(self) -> None: