diff --git a/backend/apps/plans/migrations/0009_alter_ricetransplantentry_installed_seedling_boxes.py b/backend/apps/plans/migrations/0009_alter_ricetransplantentry_installed_seedling_boxes.py
new file mode 100644
index 0000000..0ce433c
--- /dev/null
+++ b/backend/apps/plans/migrations/0009_alter_ricetransplantentry_installed_seedling_boxes.py
@@ -0,0 +1,20 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('plans', '0008_variety_seed_material'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='ricetransplantentry',
+            name='installed_seedling_boxes',
+            field=models.DecimalField(
+                decimal_places=2,
+                max_digits=8,
+                verbose_name='設置苗箱枚数',
+            ),
+        ),
+    ]