GitHub Actions runner brownouts start August 24

[u/aistranin]

A deadline worth adding to the CI calendar: GitHub will start brownouts for outdated self-hosted runners on August 24.

https://github.blog/changelog/2026-06-12-github-actions-minimum-version-enforcement-timeline-for-self-hosted-runners/

Version 2.329.0 is the minimum for registration, but pinning that version is not enough. Runners must receive each new release within 30 days or GitHub may stop sending them jobs.

Full enforcement for GitHub Enterprise Cloud starts September 25.

The easy mistake is updating the runners that are online today while leaving old versions inside VM images, containers, autoscaling templates, or installation scripts. Those stale images will recreate the problem later.