--- a/dev-master_config.json.in
+++ b/dev-master_config.json.in
@@ -13,16 +13,16 @@
   "db_name": "dev-master01.build.scl1.mozilla.com:@BASEDIR@/master",
   "enabled": true,
   "environment": "staging",
   "hostname": "dev-master01.build.scl1.mozilla.com",
   "http_port": @HTTP_PORT@,
   "master_dir": "@BASEDIR@/master",
   "release_branches": ["mozilla-release", "mozilla-beta"],
   "mobile_release_branches": ["mozilla-release", "mozilla-beta"],
-  "thunderbird_release_branches": ["comm-beta", "comm-release"],
+  "thunderbird_release_branches": ["comm-beta", "comm-esr24"],
   "name": "@MASTER_NAME@",
   "pb_port": @PB_PORT@,
   "role": "@ROLE@",
   "ssh_port": @SSH_PORT@,
   "tools_branch": "@TOOLS_BRANCH@",
   "tools_dir": "@BASEDIR@/tools"
 }]