diff --git a/swh/loader/cvs/rcsparse.pyi b/swh/loader/cvs/rcsparse.pyi
index bbd8076..1d36398 100644
--- a/swh/loader/cvs/rcsparse.pyi
+++ b/swh/loader/cvs/rcsparse.pyi
@@ -1,3 +1,4 @@
 from typing import Any
+
 def __getattr__(name) -> Any: ...
 def rcsfile(path): ...