diff --git a/django_q/migrations/0012_auto_20200702_1608.py b/django_q/migrations/0012_auto_20200702_1608.py
new file mode 100644
index 00000000..2162f4e4
--- /dev/null
+++ b/django_q/migrations/0012_auto_20200702_1608.py
@@ -0,0 +1,19 @@
+# Generated by Django 3.0.8 on 2020-07-02 16:08
+
+from django.db import migrations, models
+import django_q.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('django_q', '0011_auto_20200628_1055'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='schedule',
+            name='cron',
+            field=models.CharField(blank=True, help_text='Cron expression', max_length=100, null=True, validators=[django_q.models.validate_cron]),
+        ),
+    ]