Changes to the Heroku PgBouncer buildpack

Change effective on 23 May 2024

We updated the Heroku PgBouncer buildpack to support SCRAM-SHA-256 password authentication, and require SSL for all connections between PgBouncer and PostgreSQL. The implementation of SCRAM support is backwards-compatible with our previous password encryption setting. You can explicitly control the setting via config vars.

For more details, see the Client-Side Postgres Connection Pooling article or the buildpack’s documentation.