diff --git a/uncloud/uncloud_pay/migrations/0009_auto_20200228_0825.py b/uncloud/uncloud_pay/migrations/0009_auto_20200228_0825.py
new file mode 100644
index 0000000..66feb51
--- /dev/null
+++ b/uncloud/uncloud_pay/migrations/0009_auto_20200228_0825.py
@@ -0,0 +1,29 @@
+# Generated by Django 3.0.3 on 2020-02-28 08:25
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_pay', '0008_order_bill'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='order',
+            name='one_time_price',
+            field=models.DecimalField(decimal_places=2, editable=False, max_digits=10, validators=[django.core.validators.MinValueValidator(0)]),
+        ),
+        migrations.AlterField(
+            model_name='order',
+            name='recurring_price',
+            field=models.DecimalField(decimal_places=2, editable=False, max_digits=10, validators=[django.core.validators.MinValueValidator(0)]),
+        ),
+        migrations.AlterField(
+            model_name='payment',
+            name='timestamp',
+            field=models.DateTimeField(auto_now_add=True),
+        ),
+    ]