Resolved
This maintenance has been completed. All platform functionality has returned to normal.
Maintenance
The scheduled maintenance is now underway.
We'll post further updates as necessary or when the maintenance is complete.
Scheduled
On Wednesday, September 29, 2021, starting at 22:00 UTC (18:00 EST), and continuing until 23:00 UTC (1 hour), Heroku will be performing maintenance to the Common Runtime.
During this time, it will not be possible to scale dynos for a specific subset of apps. The apps most likely to be impacted are those that have not yet been migrated to the new shard routing infrastructure.
We will provide an update when we begin and complete the maintenance.