diff --git a/pinaxcon/raffle/models.py b/pinaxcon/raffle/models.py
index 899b59737a4e081d709934360455211eca4aebc1..975f3b2bed385fb5761058c5eb56eb202912b7b6 100644
--- a/pinaxcon/raffle/models.py
+++ b/pinaxcon/raffle/models.py
@@ -1,3 +1,4 @@
+from django.conf import settings
 from django.db import models
 
 from pinaxcon.raffle.mixins import PrizeMixin, RaffleMixin
@@ -26,11 +27,18 @@ class Prize(PrizeMixin, models.Model):
     unlocked.
     """
     description = models.CharField(max_length=255)
-    raffle = models.ForeignKey('pinaxcon_raffle.Raffle', related_name='prizes')
+    raffle = models.ForeignKey(
+        'pinaxcon_raffle.Raffle',
+        related_name='prizes',
+        on_delete=models.CASCADE,
+    )
     order = models.PositiveIntegerField()
     winning_ticket = models.OneToOneField(
-        'pinaxcon_raffle.DrawnTicket', null=True,
-        blank=True, related_name='+', on_delete=models.PROTECT
+        'pinaxcon_raffle.DrawnTicket',
+        null=True,
+        blank=True,
+        related_name='+',
+        on_delete=models.PROTECT,
     )
 
     class Meta:
@@ -45,9 +53,16 @@ class PrizeAudit(models.Model):
     Stores an audit event for changes to a particular :model:`pinaxcon_raffle.Prize`.
     """
     reason = models.CharField(max_length=255)
-    prize = models.ForeignKey('pinaxcon_raffle.Prize', related_name='audit_events')
+    prize = models.ForeignKey(
+        'pinaxcon_raffle.Prize',
+        related_name='audit_events',
+        on_delete=models.CASCADE,
+    )
 
-    user = models.ForeignKey('auth.User')
+    user = models.ForeignKey(
+        settings.AUTH_USER_MODEL,
+        on_delete=models.CASCADE,
+    )
     timestamp = models.DateTimeField(auto_now_add=True)
 
     class Meta:
@@ -62,8 +77,15 @@ class Draw(models.Model):
     Stores a draw for a given :model:`pinaxcon_raffle.Raffle`, along with audit fields
     for the creating :model:`auth.User` and the creation timestamp.
     """
-    raffle = models.ForeignKey('pinaxcon_raffle.Raffle', related_name='draws')
-    drawn_by = models.ForeignKey('auth.User')
+    raffle = models.ForeignKey(
+        'pinaxcon_raffle.Raffle',
+        related_name='draws',
+        on_delete=models.CASCADE,
+    )
+    drawn_by = models.ForeignKey(
+        settings.AUTH_USER_MODEL,
+        on_delete=models.CASCADE,
+    )
     drawn_time = models.DateTimeField(auto_now_add=True)
 
     def __str__(self):
@@ -78,9 +100,18 @@ class DrawnTicket(models.Model):
     """
     ticket = models.CharField(max_length=255)
 
-    draw = models.ForeignKey('pinaxcon_raffle.Draw')
-    prize = models.ForeignKey('pinaxcon_raffle.Prize')
-    lineitem = models.ForeignKey('registrasion.LineItem')
+    draw = models.ForeignKey(
+        'pinaxcon_raffle.Draw',
+        on_delete=models.CASCADE,
+    )
+    prize = models.ForeignKey(
+        'pinaxcon_raffle.Prize',
+        on_delete=models.CASCADE,
+    )
+    lineitem = models.ForeignKey(
+        'registrasion.LineItem',
+        on_delete=models.CASCADE,
+    )
 
     def __str__(self):
-        return f"{self.ticket}: {self.draw.raffle}"
\ No newline at end of file
+        return f"{self.ticket}: {self.draw.raffle}"