diff --git a/langserve/server.py b/langserve/server.py
index d6f9e866..182a7960 100644
--- a/langserve/server.py
+++ b/langserve/server.py
@@ -448,7 +448,7 @@ def add_routes(
         playground_type=playground_type,
         astream_events_version=astream_events_version,
     )
-    
+
     namespace = path or ""
 
     route_tags = [path.strip("/")] if path else None