diff --git a/edx_proctoring/apps.py b/edx_proctoring/apps.py
index eba34af307..0e677a102e 100644
--- a/edx_proctoring/apps.py
+++ b/edx_proctoring/apps.py
@@ -26,6 +26,7 @@
     'help_center_article_url',
     'integration_specific_email',
     'learner_notification_from_email',
+    'lti_external',
     'needs_oauth',
     'organization',
     'passing_statuses',