# GitLab: CI pipelines not starting on merge requests.

- Impact (vendor’s label): major
- Status: resolved
- Started: 2026-06-30 08:52 UTC · Resolved: 2026-06-30 12:07 UTC · Duration: 3.3 h
- Updates: 6 · Affected components: CI/CD, Website
- [Vendor status page: https://status.gitlab.com/pages/incident/5b36dc6502d06804c08349f7/6a4383b4d2133f5159beffe4](https://status.gitlab.com/pages/incident/5b36dc6502d06804c08349f7/6a4383b4d2133f5159beffe4)
- [Company: GitLab](https://rewindex.com/company/gitlab.md)

## Timeline of updates

- **investigating** 2026-06-30 08:52 UTC: We are currently investigating an issue affecting CI pipelines not starting on merge requests. Our team is actively investigating the root cause.
- **identified** 2026-06-30 09:37 UTC: We have identified that the sidekiq workers processing the jobs are getting deferred. The team is working on identifying the remediation steps.
- **identified** 2026-06-30 10:51 UTC: No material updates to report. We are continuing to investigate the current issue and engineers are working to determine remediation steps.
- **identified** 2026-06-30 11:19 UTC: Our engineers are still investigating the issue but jobs are starting to be processed with a delay. More details can be found here: https://gitlab.com/gitlab-com/gl-infra/production/-/work\_items/22412
- **monitoring** 2026-06-30 11:39 UTC: Queues and runner backlog are trending back towards normal, while systems continue to work through the remaining backlog. Engineers are continuing to monitor this.
- **resolved** 2026-06-30 12:07 UTC: Incident has now been mitigated and runner backlogs are now back to normal. CI pipelines are now resuming. Engineers will continue to monitor this recovery.

## Rewindex changes for this incident

- 2026-06-30 08:52 UTC: [Major incident: CI pipelines not starting on merge requests.](https://rewindex.com/change/i7d1ece03f3911c.md)


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Canonical: https://rewindex.com/company/gitlab/incidents/6a4383b4d2133f5159beffe4 · Markdown: https://rewindex.com/company/gitlab/incidents/6a4383b4d2133f5159beffe4.md · JSON: https://rewindex.com/api/v1/companies/gitlab/incidents/6a4383b4d2133f5159beffe4 · Generated 2026-10-18T10:24:52.132Z