diff --git a/backend/bittan/bittan/models/ticket.py b/backend/bittan/bittan/models/ticket.py
index 2538594..00bd3a5 100644
--- a/backend/bittan/bittan/models/ticket.py
+++ b/backend/bittan/bittan/models/ticket.py
@@ -6,3 +6,4 @@ class Ticket(models.Model):
 	payment = models.ForeignKey('Payment', on_delete=models.DO_NOTHING)
 	ticket_type = models.ForeignKey('TicketType', on_delete=models.DO_NOTHING)
 	times_used = models.IntegerField(default=0)
+	chapter_event = models.ForeignKey("ChapterEvent", on_delete=models.DO_NOTHING)