diff --git a/tests/requirements.in b/tests/requirements.in
index 425a283..8dc90bd 100644
--- a/tests/requirements.in
+++ b/tests/requirements.in
@@ -1,3 +1,3 @@
 file:.#egg=rpds-py
 pytest
-pytest-run-parallel
\ No newline at end of file
+pytest-run-parallel
diff --git a/tests/test_hash_trie_map.py b/tests/test_hash_trie_map.py
index 3544305..3dec414 100644
--- a/tests/test_hash_trie_map.py
+++ b/tests/test_hash_trie_map.py
@@ -39,9 +39,11 @@
 # see https://github.com/python/cpython/issues/127065,
 # remove this when the CPython bug is fixed in a released version
 if bool(sysconfig.get_config_var("Py_GIL_DISABLED")):
+
     def methodcaller(name, /, *args, **kwargs):
         def caller(obj):
             return getattr(obj, name)(*args, **kwargs)
+
         return caller