diff --git a/awx/api/serializers.py b/awx/api/serializers.py
index fe8d288552..3ba2488a5b 100644
--- a/awx/api/serializers.py
+++ b/awx/api/serializers.py
@@ -2207,6 +2207,7 @@ class InventoryUpdateSerializer(UnifiedJobSerializer, InventorySourceOptionsSeri
             'org_host_limit_error',
             'source_project_update',
             'custom_virtualenv',
+            'instance_group',
             '-controller_node',
         )