diff --git a/agr_literature_service/api/crud/dataset_crud.py b/agr_literature_service/api/crud/dataset_crud.py
index 7e354d025..1537686f8 100644
--- a/agr_literature_service/api/crud/dataset_crud.py
+++ b/agr_literature_service/api/crud/dataset_crud.py
@@ -1,5 +1,5 @@
 from collections import defaultdict
-from typing import Dict, List, Optional
+from typing import Dict, List
 
 from fastapi import HTTPException
 from sqlalchemy.orm import Session