diff --git a/src/power_grid_model_io/data_stores/csv_dir_store.py b/src/power_grid_model_io/data_stores/csv_dir_store.py
index ba390285..18f4f27c 100644
--- a/src/power_grid_model_io/data_stores/csv_dir_store.py
+++ b/src/power_grid_model_io/data_stores/csv_dir_store.py
@@ -6,7 +6,7 @@
 """
 
 from pathlib import Path
-from typing import Any, Callable, Dict, List
+from typing import Any, Dict, List
 
 import pandas as pd