diff --git a/entity_event_slack/migrations/0001_initial.py b/entity_event_slack/migrations/0001_initial.py
index 1c3a62b..8131d97 100644
--- a/entity_event_slack/migrations/0001_initial.py
+++ b/entity_event_slack/migrations/0001_initial.py
@@ -2,6 +2,7 @@
 from __future__ import unicode_literals
 
 from django.db import models, migrations
+import django.db.models.deletion
 
 
 class Migration(migrations.Migration):