1 # Rolling back from a broken deployment 2 3 If the current default version is broken 4 5 ## Find the target version to rollback to 6 7 Check the [list of default versions](https://docs.google.com/spreadsheets/d/1MyxMZDSPedahmdh9EHGRxFdNMwVfBD4cB4jYGWuG6FM) 8 of the Perf Dashboard. The current version should be at the top of the 9 list, and the previous version should be directly under it. 10 11 You should rollback to the previous version. Please add that version to 12 the top of the list after you rollback to it. 13 14 ## Rollback to the previous version 15 16 Find the target version in the [app engine versions 17 list](https://appengine.google.com/deployment?&app_id=s~chromeperf). 18 Select the checkbox next to it, and then hit the "Migrate Traffic" button. 19
