diff --git a/caikit/runtime/train.py b/caikit/runtime/train.py
index 3c328ab64..6308d467f 100644
--- a/caikit/runtime/train.py
+++ b/caikit/runtime/train.py
@@ -51,6 +51,7 @@
 
 class ArgumentParserError(Exception):
     """Custom exception class for ArgumentParser errors."""
+
     pass