diff --git a/netbox/extras/migrations/0106_bookmark_user_cascade_deletion.py b/netbox/extras/migrations/0106_bookmark_user_cascade_deletion.py
new file mode 100644
index 000000000..d7bef2f0b
--- /dev/null
+++ b/netbox/extras/migrations/0106_bookmark_user_cascade_deletion.py
@@ -0,0 +1,21 @@
+# Generated by Django 4.2.9 on 2024-01-19 19:46
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('extras', '0105_customfield_min_max_values'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='bookmark',
+            name='user',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL),
+        ),
+    ]
diff --git a/netbox/extras/models/models.py b/netbox/extras/models/models.py
index 778d7b68d..4ac36a3ac 100644
--- a/netbox/extras/models/models.py
+++ b/netbox/extras/models/models.py
@@ -771,7 +771,7 @@ class Bookmark(models.Model):
     )
     user = models.ForeignKey(
         to=settings.AUTH_USER_MODEL,
-        on_delete=models.PROTECT
+        on_delete=models.CASCADE
     )
 
     objects = RestrictedQuerySet.as_manager()