diff --git a/src/mothership-app/migrations/1700847183_updated_instances.js b/src/mothership-app/migrations/1700847183_updated_instances.js
new file mode 100644
index 00000000..59a54f38
--- /dev/null
+++ b/src/mothership-app/migrations/1700847183_updated_instances.js
@@ -0,0 +1,44 @@
+/// <reference path="../pb_data/types.d.ts" />
+migrate((db) => {
+  const dao = new Dao(db)
+  const collection = dao.findCollectionByNameOrId("etae8tuiaxl6xfv")
+
+  // update
+  collection.schema.addField(new SchemaField({
+    "system": false,
+    "id": "qdtuuld1",
+    "name": "subdomain",
+    "type": "text",
+    "required": true,
+    "presentable": false,
+    "unique": false,
+    "options": {
+      "min": null,
+      "max": 50,
+      "pattern": "^[a-z][a-z0-9-]{2,39}$"
+    }
+  }))
+
+  return dao.saveCollection(collection)
+}, (db) => {
+  const dao = new Dao(db)
+  const collection = dao.findCollectionByNameOrId("etae8tuiaxl6xfv")
+
+  // update
+  collection.schema.addField(new SchemaField({
+    "system": false,
+    "id": "qdtuuld1",
+    "name": "subdomain",
+    "type": "text",
+    "required": true,
+    "presentable": false,
+    "unique": false,
+    "options": {
+      "min": null,
+      "max": 50,
+      "pattern": "^[a-z][\\-a-z]+$"
+    }
+  }))
+
+  return dao.saveCollection(collection)
+})