Does WPT cache service workers between tests?

I am running a test for which downloads the service worker This service worker was recently updated (doesn’t use hash/version number in URL) but WPT test results are returning the old service worker (, even on new tests.

Does WPT cache the service worker, and if so how can I update it?

No, WPT completely wipes the profile between tests which nukes EVERYTHING. Is it possible that something is stuck in your CDN cache that needs to be purged?

Thank you Patrick for your quick reply. I will follow up with the guys who manage the CDN then and update accordingly

As expected, it isn’t related to WPT. I confirmed this by setting a host file record to the IP address used in the WPT response and using curl.