diff --git a/datasets/flwr_datasets/federated_dataset.py b/datasets/flwr_datasets/federated_dataset.py
index be03f0a4fcc1..76d434b8140e 100644
--- a/datasets/flwr_datasets/federated_dataset.py
+++ b/datasets/flwr_datasets/federated_dataset.py
@@ -14,6 +14,7 @@
 # ==============================================================================
 """FederatedDataset."""
 
+
 from typing import Dict, Optional
 
 import datasets