diff --git a/endpoints/v2/manifest.py b/endpoints/v2/manifest.py
index 8840972d1..9328e02d5 100644
--- a/endpoints/v2/manifest.py
+++ b/endpoints/v2/manifest.py
@@ -338,7 +338,7 @@ def _updated_v1_metadata(v1_metadata_json, updated_id_map):
   parsed = json.loads(v1_metadata_json)
   parsed['id'] = updated_id_map[parsed['id']]
 
-  if parsed.get('parent'):
+  if parsed.get('parent') and parsed['parent'] in updated_id_map:
     parsed['parent'] = updated_id_map[parsed['parent']]
 
   if parsed.get('container_config', {}).get('Image'):