diff --git a/backend/src/model/van_location.py b/backend/src/model/van_location.py
index 1d86e8f6..07ba71e8 100644
--- a/backend/src/model/van_location.py
+++ b/backend/src/model/van_location.py
@@ -1,6 +1,6 @@
 from datetime import datetime
 
-from sqlalchemy import ForeignKey, ForeignKeyConstraint
+from sqlalchemy import ForeignKey, ForeignKeyConstraint, func
 from sqlalchemy.orm import Mapped, mapped_column
 from sqlalchemy.sql import func
 from src.db import Base
diff --git a/backend/src/model/van_tracker_session.py b/backend/src/model/van_tracker_session.py
index 96e5755a..b1448de8 100644
--- a/backend/src/model/van_tracker_session.py
+++ b/backend/src/model/van_tracker_session.py
@@ -1,6 +1,6 @@
 from datetime import datetime
 
-from sqlalchemy import Boolean, Integer, String
+from sqlalchemy import Boolean, Integer, String, func
 from sqlalchemy.orm import Mapped, mapped_column
 from sqlalchemy.sql import func
 from src.db import Base