diff --git a/injector_test.py b/injector_test.py
index d477112..8a93872 100644
--- a/injector_test.py
+++ b/injector_test.py
@@ -1786,6 +1786,7 @@ def fun(user_id: UserID) -> int:
     injector = Injector([configure])
     assert injector.call_with_injection(fun) == 123
 
+
 def test_with_injector_wrapper():
     UserID = Annotated[int, "user_id"]