diff --git a/examples/rate_limit_filter_pipeline.py b/examples/rate_limit_filter_pipeline.py
index 9c3ea9b..49ae733 100644
--- a/examples/rate_limit_filter_pipeline.py
+++ b/examples/rate_limit_filter_pipeline.py
@@ -1,9 +1,9 @@
+import os
 from typing import List, Optional
 from pydantic import BaseModel
 from schemas import OpenAIChatMessage
 import time
 
-
 class Pipeline:
     def __init__(self):
         # Pipeline filters are only compatible with Open WebUI