diff --git a/py-polars/polars/exceptions.py b/py-polars/polars/exceptions.py
index 81c9544135df..a4e5b81a6201 100644
--- a/py-polars/polars/exceptions.py
+++ b/py-polars/polars/exceptions.py
@@ -120,5 +120,5 @@ class ArrowError(Exception):
     "ShapeError",
     "StringCacheMismatchError",
     "StructFieldNotFoundError",
-    "TooManyRowsReturnedError"
+    "TooManyRowsReturnedError",
 ]