diff --git a/ws/migrations/0055_discount_url_non_null.py b/ws/migrations/0055_discount_url_non_null.py
new file mode 100644
index 00000000..e6665d7b
--- /dev/null
+++ b/ws/migrations/0055_discount_url_non_null.py
@@ -0,0 +1,19 @@
+# Generated by Django 3.2.19 on 2023-06-18 16:24
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('ws', '0054_allow_null_reminder_sent_at'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='discount',
+            name='url',
+            field=models.URLField(blank=True, default=''),
+            preserve_default=False,
+        ),
+    ]
diff --git a/ws/models.py b/ws/models.py
index df606ad5..49b92f66 100644
--- a/ws/models.py
+++ b/ws/models.py
@@ -129,7 +129,7 @@ class Discount(models.Model):
     name = models.CharField(max_length=255)
     summary = models.CharField(max_length=255)
     terms = models.TextField(max_length=4095)
-    url = models.URLField(null=True, blank=True)
+    url = models.URLField(blank=True)
     ga_key = models.CharField(
         max_length=63,
         # If blank, then we don't actually report this information to a spreadsheet