diff --git a/biscuit/apps/chronos/util.py b/biscuit/apps/chronos/util.py
index 98cabb72000da0007d36575b1c7c6809142a6f0f..8e7c53d119533176a8fc940efb79d9eb26de1dfc 100644
--- a/biscuit/apps/chronos/util.py
+++ b/biscuit/apps/chronos/util.py
@@ -1,10 +1,10 @@
 from datetime import datetime
 from typing import Optional
 
-from django.apps.AppConfig import get_model
+from django.apps import apps
 from django.db import models
 
-LessonPeriod = get_model('chronos.LessonPeriod')  # noqa
+LessonPeriod = apps.get_model('chronos.LessonPeriod')  # noqa
 
 
 def current_week() -> int: