diff --git a/server/planning/search/queries/elastic.py b/server/planning/search/queries/elastic.py
index 9df705059..523b19a3c 100644
--- a/server/planning/search/queries/elastic.py
+++ b/server/planning/search/queries/elastic.py
@@ -11,7 +11,7 @@
 from typing import Any, List, NamedTuple, Dict, Optional, Set
 import pytz
 
-from datetime import timedelta
+from datetime import timedelta, datetime
 from flask import current_app as app
 from eve.utils import str_to_date