diff --git a/executorlib/cache/hdf.py b/executorlib/cache/hdf.py
index 7f0af98f..9e8c8798 100644
--- a/executorlib/cache/hdf.py
+++ b/executorlib/cache/hdf.py
@@ -24,9 +24,10 @@ def dump(file_name: str, data_dict: dict) -> None:
             if data_key in group_dict.keys():
                 fname.create_dataset(
                     name="/" + group_dict[data_key],
-                    data=np.void(cloudpickle.dumps(data_value))
+                    data=np.void(cloudpickle.dumps(data_value)),
                 )
 
+
 def load(file_name: str) -> dict:
     """
     Load data dictionary from HDF5 file