diff --git a/netbox/ipam/graphql/types.py b/netbox/ipam/graphql/types.py
index 0563683f1..9b3becc17 100644
--- a/netbox/ipam/graphql/types.py
+++ b/netbox/ipam/graphql/types.py
@@ -291,7 +291,7 @@ class VLANTranslationPolicyType(NetBoxObjectType):
     filters=VLANTranslationRuleFilter
 )
 class VLANTranslationRuleType(NetBoxObjectType):
-    policy: Annotated["VLANTranslationPolicyType", strawberry.lazy('ipam.graphql.types')]
+    policy: Annotated["VLANTranslationPolicyType", strawberry.lazy('ipam.graphql.types')] | None
 
 
 @strawberry_django.type(
diff --git a/netbox/ipam/migrations/0074_vlantranslationpolicy_vlantranslationrule.py b/netbox/ipam/migrations/0074_vlantranslationpolicy_vlantranslationrule.py
index 4b35ea9e7..d791ed9a5 100644
--- a/netbox/ipam/migrations/0074_vlantranslationpolicy_vlantranslationrule.py
+++ b/netbox/ipam/migrations/0074_vlantranslationpolicy_vlantranslationrule.py
@@ -42,7 +42,7 @@ class Migration(migrations.Migration):
                 ('custom_field_data', models.JSONField(blank=True, default=dict, encoder=utilities.json.CustomFieldJSONEncoder)),
                 ('local_vid', models.PositiveSmallIntegerField(validators=[django.core.validators.MinValueValidator(1), django.core.validators.MaxValueValidator(4094)])),
                 ('remote_vid', models.PositiveSmallIntegerField(validators=[django.core.validators.MinValueValidator(1), django.core.validators.MaxValueValidator(4094)])),
-                ('policy', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='rules', to='ipam.vlantranslationpolicy')),
+                ('policy', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='rules', to='ipam.vlantranslationpolicy')),
                 ('tags', taggit.managers.TaggableManager(through='extras.TaggedItem', to='extras.Tag')),
             ],
             options={
diff --git a/netbox/ipam/models/vlans.py b/netbox/ipam/models/vlans.py
index 56c7b7a81..3123b32be 100644
--- a/netbox/ipam/models/vlans.py
+++ b/netbox/ipam/models/vlans.py
@@ -297,7 +297,8 @@ class VLANTranslationRule(NetBoxModel):
     policy = models.ForeignKey(
         to=VLANTranslationPolicy,
         related_name='rules',
-        on_delete=models.CASCADE,
+        on_delete=models.SET_NULL,
+        null=True,
     )
     local_vid = models.PositiveSmallIntegerField(
         verbose_name=_('Local VLAN ID'),