diff --git a/src/humanize/lists.py b/src/humanize/lists.py
index 3a52f1e..a4916d2 100644
--- a/src/humanize/lists.py
+++ b/src/humanize/lists.py
@@ -34,3 +34,4 @@ def natural_list(items: list[Any]) -> str:
         return f"{str(items[0])} and {str(items[1])}"
     else:
         return ", ".join(str(item) for item in items[:-1]) + f" and {str(items[-1])}"
+