Incident with Issues and Pull Requests
Incident
Report for GitHub
Resolved
On January 15, 2026, between 16:40 UTC and 18:20 UTC, we observed increased latency and timeouts across Issues, Pull Requests, Notifications, Actions, Repositories, API, Account Login and Alive. An average 1.8% of combined web and API requests saw failure, peaking briefly at 10% early on. The majority of impact was observed for unauthenticated users, but authenticated users were impacted as well.
This was caused by an infrastructure update to some of our data stores. Upgrading this infrastructure to a new major version resulted in unexpected resource contention, leading to distributed impact in the form of slow queries and increased timeouts across services that depend on these datasets. We mitigated this by rolling back to the previous stable version.
We are working to improve our validation process for these types of upgrades to catch issues that only occur under high load before full release, improve detection time, and reduce mitigation times in the future.
This was caused by an infrastructure update to some of our data stores. Upgrading this infrastructure to a new major version resulted in unexpected resource contention, leading to distributed impact in the form of slow queries and increased timeouts across services that depend on these datasets. We mitigated this by rolling back to the previous stable version.
We are working to improve our validation process for these types of upgrades to catch issues that only occur under high load before full release, improve detection time, and reduce mitigation times in the future.
Update
Pull Requests is operating normally.
Update
Issues and Pull Requests are experiencing degraded performance. We are continuing to investigate.
Update
We are seeing recovery across all services, but will continue to monitor before resolving.
Update
API Requests is operating normally.
Update
We are seeing some signs of recovery, particularly for authenticated users. Unauthenticated users may continue to see impact across multiple services. Mitigation efforts continue.
Update
API Requests is experiencing degraded performance. We are continuing to investigate.
Update
Actions is operating normally.
Update
A number of services are currently degraded, especially issues, pull requests, and the API. Investigation and mitigation is underway.
Update
Actions is experiencing degraded availability. We are continuing to investigate.
Update
API Requests is experiencing degraded availability. We are continuing to investigate.
Investigating
We are investigating reports of degraded availability for API Requests, Actions, Issues and Pull Requests
This incident affected: API Requests, Issues, Pull Requests, and Actions.
Subscribe to our developer newsletter
Get tips, technical guides, and best practices. Twice a month. Right in your inbox.
Subscribe