--- a/.taskcluster.yml
+++ b/.taskcluster.yml
@@ -48,20 +48,21 @@ tasks:
       workerType: "gecko-decision"
       provisionerId: "aws-provisioner-v1"
 
       tags:
         createdForUser: {{owner}}
 
       scopes:
         # Bug 1269443: cache scopes, etc. must be listed explicitly
-        - "docker-worker:cache:level-1-*"
+        - "docker-worker:cache:level-{{level}}-*"
         - "docker-worker:cache:tooltool-cache"
         - "secrets:get:project/taskcluster/gecko/hgfingerprint"
-        - "assume:repo:hg.mozilla.org/try:*"
+        # mozilla-taskcluster will append the appropriate assume:repo:<repo>
+        # scope here.
 
       routes:
         - "index.gecko.v2.{{project}}.latest.firefox.decision"
         - "tc-treeherder.{{project}}.{{revision_hash}}"
         - "tc-treeherder-stage.{{project}}.{{revision_hash}}"
 
       payload:
         env: