We have updated our default user agent to use Chrome instead of HeadlessChrome.

This makes check runs more closely replicate the actual user experience and reduces the likelihood of checks being blocked by bot filters or firewalls.

The new user agent uses the following format: "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.53 Safari/537.36 (Checkly, https://www.checklyhq.com)"

If you have used the user agent definition to allowlist browser checks, please replace HeadlessChrome with Chrome in any firewall settings.

For more information, see our documentation.

Questions or feedback? Join our Slack community.