diff --git a/tests/test_sync.py b/tests/test_sync.py
index 9c4f3cb..3abe3c3 100644
--- a/tests/test_sync.py
+++ b/tests/test_sync.py
@@ -71,6 +71,7 @@ def test_read_only_and_prefetch():
 
     assert list(a.list()) == list(b.list()) == []
 
+
 def test_upload_and_update():
     a = MemoryStorage(fileext='.a')
     b = MemoryStorage(fileext='.b')