--- a/taskcluster/taskgraph/actions/retrigger.py
+++ b/taskcluster/taskgraph/actions/retrigger.py
@@ -73,14 +73,14 @@ def retrigger_action(parameters, input, 
         for i in xrange(times):
             create_tasks(to_run, full_task_graph, label_to_taskid, parameters, decision_task_id)
 
             logger.info('Scheduled {}{}(time {}/{})'.format(label, with_downstream, i+1, times))
     else:
         new_task_definition = requests.get('https://queue.taskcluster.net/v1/task/%s'%(task_id)).json()
         new_task_definition['created'] = dict({"relative-datestamp": "0 seconds"})
         new_task_definition['deadline'] = dict({"relative-datestamp": "4 days"})
-        new_task_definition['expired'] = dict({"relative-datestamp": "14 days"})
+        new_task_definition['expires'] = dict({"relative-datestamp": "14 days"})
         new_task_id=slugid()
         create_task_from_def(new_task_id, new_task_definition, parameters['level'])
 
         logger.info('Scheduled {}{}(time {}/{})'.format(label, with_downstream, i+1, times))