Changes to Heroku Postgres credentials naming requirements

Change effective on 02 September 2025

We’re changing our requirements for new and existing Heroku Postgres credential names. This change is part of an upcoming improvement to our platform’s credentialing system. Starting today, new credential names:

  • Can’t start with rds
  • Can’t be named heroku

If you have existing credentials affected by this change, you must recreate them following our naming guidelines by October 31, 2025. We’ll send an email with further instructions to users with affected credentials.

For more information on credential names, see Heroku Postgres Credentials.