Changes to release retention and rollback

Change effective on 12 August 2025

The policy for release retention and rollback is changing. Previously, the retention policy for Fir-generation apps was 30 days and 100 releases, and Cedar-generation apps had unlimited retention.

Starting September 12th, Heroku will destroy slugs and other release artifacts associated with releases that are older than 30 days and older than 20 releases.

The status of releases that fit these criteria is expired. Rollback to expired releases is not supported.