Small number of incoming GitHub Webhook failing

Resolved

Minor impact

Started

Lasted 47m

View official incident ↗

Updates

  1. Resolved

    The error rate has returned to normal levels.

  2. Monitoring

    The mitigation is rolling out and we are seeing recovery. We will continue to monitor and provide an update.

  3. Identified

    Since 2026-09-30 20:52:36 UTC on 30 September, small amount of incoming GitHub webhook deliveries to Buildkite pipelines are being rejected, so the related builds are not created. For people who use GitHub.com may affect ability to receive status checks. We have identified the cause and are deploying a mitigation. This does not affect GitHub Enterprise Server and other SCM providers.