Mini and Basic Heroku Postgres plans have reached end-of-life

Change effective on 29 May 2024

The mini and basic Heroku Postgres plans on the Essential-tier have reached end-of-life (EOL). You can no longer provision mini and basic add-ons. If your review apps and CI apps use mini or basic databases in the app.json, you must update them to the new Essential-tier plans. If not, no action is required as we start migrating these add-ons to the new plans.

See our schedule for deprecating and migrating all mini and basic databases in the Choosing the Right Heroku Postgres Plan article.