diff --git a/alkatorapi/migrations/0021_alter_cart_user.py b/alkatorapi/migrations/0021_alter_cart_user.py
new file mode 100644
index 0000000..6b67312
--- /dev/null
+++ b/alkatorapi/migrations/0021_alter_cart_user.py
@@ -0,0 +1,21 @@
+# Generated by Django 4.2.12 on 2024-10-13 13:45
+
+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),
+        ('alkatorapi', '0020_alter_product_img'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='cart',
+            name='user',
+            field=models.OneToOneField(on_delete=django.db.models.deletion.RESTRICT, related_name='cart', to=settings.AUTH_USER_MODEL),
+        ),
+    ]
diff --git a/alkatorapi/models.py b/alkatorapi/models.py
index bf249f7..9fe9dfc 100644
--- a/alkatorapi/models.py
+++ b/alkatorapi/models.py
@@ -76,7 +76,7 @@ class Product(models.Model):
 
 
 class Cart(models.Model):
-    user = models.ForeignKey(DjangoUser, on_delete=models.RESTRICT, related_name='cart')
+    user = models.OneToOneField(DjangoUser, on_delete=models.RESTRICT, related_name='cart')
     items = models.ManyToManyField(Product, through='CartProduct')