diff --git a/flupdt/cli.py b/flupdt/cli.py
index 80c3362..6de67bc 100644
--- a/flupdt/cli.py
+++ b/flupdt/cli.py
@@ -1,8 +1,10 @@
 #!/usr/bin/env python3
+
 import argparse
 
 
-def parse_inputs():
+def parse_inputs() -> argparse.Namespace:
+
     parser = argparse.ArgumentParser()
     parser.add_argument("flake_path", metavar="flake-path", help="path to flake to evaluate")
     parser.add_argument("--keep-hydra", action="store_true", help="allow evaluating Hydra jobs")