# Heroku: Heroku Service Degradation

- Provider: [Heroku](https://outages.cc/heroku.md)
- Type: Incident
- State: Resolved
- Worst impact: Degraded performance
- Started: 2026-08-25 15:03 UTC
- Resolved: 2026-08-25 15:55 UTC (lasted 52 min)
- Components: Apps
- Official update: https://status.heroku.com/incidents/2963

## Updates from Heroku

### update, 2026-08-25 16:07 UTC

Engineers have remediated the issue.

### resolved, 2026-08-25 15:55 UTC

Incident resolved.

### update, 2026-08-25 15:40 UTC

A recent security update for Common Runtime applications in the EU region may have unintentionally enforced a stricter policy for TLS certificates used for app default domain TLS termination ( .herokuapp.com). This caused some clients to experience TLS handshake failures and to be unable to connect to apps. Engineers have identified the issue and we are working on remediating.

### investigating, 2026-08-25 15:03 UTC

Heroku engineers are investigating.