Resolved after 47 minutes, affecting GitHub Webhooks, on October 1, 2026.
The mitigation is rolling out and we are seeing recovery. We will continue to monitor and provide an update.
Affected components
Update timeline
- identified Oct 01, 2026, 06:10 AM UTC
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.
- monitoring Oct 01, 2026, 06:33 AM UTC
The mitigation is rolling out and we are seeing recovery. We will continue to monitor and provide an update.
- resolved Oct 01, 2026, 06:57 AM UTC
The error rate has returned to normal levels.
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