diff --git a/cellpack/autopack/loaders/utils.py b/cellpack/autopack/loaders/utils.py
index 6ff6217f..93e45fa1 100644
--- a/cellpack/autopack/loaders/utils.py
+++ b/cellpack/autopack/loaders/utils.py
@@ -34,4 +34,4 @@ def read_json_file(path):
 def write_json_file(path, data):
     Path(path).parent.mkdir(exist_ok=True, parents=True)
     with open(path, "w") as file_name:
-        json.dump(data, file_name)
\ No newline at end of file
+        json.dump(data, file_name)