There were 4 Semaphore outages since February 3, 2026 totaling 8h 54m of downtime. Each is summarised below — incident details, duration, and resolution information.
We are currently investigating this issue.
The issue has been identified and a fix is being implemented.
A fix has been implemented and we are monitoring the results.
This incident has been resolved.
We are currently investigating this issue.
We are continuing to investigate this issue.
We are continuing to investigate job start failures and processing delays. We will continue to update while investigating this.
The issue has been identified and we are working on a fix. We will provide our next update within 30 minutes or sooner if things change. We thank you for your patience while we continue to work to resolve this issue.
A fix has been implemented and we are monitoring the results. We will provide our next update within 30 minutes or sooner if things change.
This incident has been resolved.
Webhook delivery delays from GitHub led to a backlog of workflows being triggered all at once as delivery resumes. This caused a temporary spike in demand for some Semaphore machines. We are actively working to reduce the impact and restore normal capacity. We continue monitoring both GitHub’s incident and Semaphore infrastructure closely, and we will provide further updates as conditions stabilize.
We’re seeing considerable improvement in internal performance metrics, and we will continue monitoring until conditions fully stabilize.
This incident has been resolved.
We are currently investigating this issue.
Webhook delivery delays between GitHub and Semaphore appear to be caused by degraded performance on GitHub’s side. GitHub is currently reporting an active incident that appears related. We are monitoring the situation closely and will provide updates as GitHub resolves the issue.
GitHub has posted an update indicating recovery of the aforementioned issue. We continue monitoring Semaphore closely as things stabilize. (GitHub Status: https://www.githubstatus.com/incidents/f314nlctbfs5)
This incident has been resolved.
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