diff --git a/apiserver/apiserver/api/utils.py b/apiserver/apiserver/api/utils.py
index e4c8a26..d500ffd 100644
--- a/apiserver/apiserver/api/utils.py
+++ b/apiserver/apiserver/api/utils.py
@@ -1,3 +1,4 @@
+from rest_framework.exceptions import ValidationError
 import datetime
 from dateutil import relativedelta
 from uuid import uuid4