diff --git a/awx/main/migrations/_OrgAdmin_to_use_ig.py b/awx/main/migrations/_OrgAdmin_to_use_ig.py
index 3cbf42d5bd..54477b1c29 100644
--- a/awx/main/migrations/_OrgAdmin_to_use_ig.py
+++ b/awx/main/migrations/_OrgAdmin_to_use_ig.py
@@ -8,7 +8,7 @@ logger = logging.getLogger('awx.main.migrations')
 def migrate_org_admin_to_use(apps, schema_editor):
     logger.info('Initiated migration from Org admin to use role')
     roles_added = 0
-    for org in Organization.objects.prefetch_related('admin_role__members').iterator():
+    for org in Organization.objects.prefetch_related('admin_role__members').iterator(chunk_size=1000):
         igs = list(org.instance_groups.all())
         if not igs:
             continue