diff --git a/tests/test_3350_enforce_attrs_string_keys.py b/tests/test_3350_enforce_attrs_string_keys.py
index 20c1123c18..f07ac6b3a5 100644
--- a/tests/test_3350_enforce_attrs_string_keys.py
+++ b/tests/test_3350_enforce_attrs_string_keys.py
@@ -4,6 +4,7 @@
 from __future__ import annotations
 
 import pytest
+
 import awkward as ak