diff --git a/InvenTree/order/migrations/0067_auto_20220516_1120.py b/InvenTree/order/migrations/0067_auto_20220516_1120.py
new file mode 100644
index 0000000000..0c5409cf35
--- /dev/null
+++ b/InvenTree/order/migrations/0067_auto_20220516_1120.py
@@ -0,0 +1,23 @@
+# Generated by Django 3.2.13 on 2022-05-16 11:20
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('order', '0066_alter_purchaseorder_supplier'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='purchaseorder',
+            name='metadata',
+            field=models.JSONField(blank=True, help_text='JSON metadata field, for use by external plugins', null=True, verbose_name='Plugin Metadata'),
+        ),
+        migrations.AddField(
+            model_name='salesorder',
+            name='metadata',
+            field=models.JSONField(blank=True, help_text='JSON metadata field, for use by external plugins', null=True, verbose_name='Plugin Metadata'),
+        ),
+    ]
diff --git a/InvenTree/order/models.py b/InvenTree/order/models.py
index 6ca5b7a293..d0e4f8d93b 100644
--- a/InvenTree/order/models.py
+++ b/InvenTree/order/models.py
@@ -30,7 +30,9 @@ from users import models as UserModels
 from part import models as PartModels
 from stock import models as stock_models
 from company.models import Company, SupplierPart
+
 from plugin.events import trigger_event
+from plugin.models import MetadataMixin
 
 import InvenTree.helpers
 from InvenTree.fields import InvenTreeModelMoneyField, RoundingDecimalField
@@ -97,7 +99,7 @@ def get_next_so_number():
     return reference
 
 
-class Order(ReferenceIndexingMixin):
+class Order(MetadataMixin, ReferenceIndexingMixin):
     """ Abstract model for an order.
 
     Instances of this class: