diff --git a/aiida_upgrade/__main__.py b/aiida_upgrade/__main__.py
index 960024f..fd7f816 100644
--- a/aiida_upgrade/__main__.py
+++ b/aiida_upgrade/__main__.py
@@ -1,4 +1,5 @@
 """Main entry-point for CLI."""
+
 import sys
 from pathlib import Path