diff --git a/.taskcluster.yml b/.taskcluster.yml
index 83c0ac6b65e..f7ec151f292 100644
--- a/.taskcluster.yml
+++ b/.taskcluster.yml
@@ -17,7 +17,7 @@ tasks:
         owner: ${event.pusher.name}@users.noreply.github.com
         source: ${event.compare}
       scopes:
-        "queue:create-task:aws-provisioner-v1/github-worker"
+        - "queue:create-task:aws-provisioner-v1/github-worker"
 
       payload:
         maxRunTime: 600