Heroku-16, Heroku-18 and Heroku-20 Stack Images Updated

Change effective on 08 February 2021

We have updated the heroku-16, heroku-18 and heroku-20 stack images to pick up security fixes in upstream packages. The new stack images will be rolled out automatically over the next 24 hours. You do not need to redeploy your app or manually restart your dynos.

See this Dev Center article for an overview of the packages available in each stack image.

The Heroku-16 stack is deprecated and will be end-of-life on May 1st, 2021. Please upgrade to a newer stack as soon as possible. See the Heroku-16 End-Of-Life FAQ for more details.

Changelog of packages

The following packages have been changed; a separate section for each stack (if applicable) lists packages that are only available at build time, but not at runtime.

Stack: heroku-16

  • Removed postgresql-client-12
  • Updated ca-certificates from version 20201027ubuntu0.16.04.1 to 20210119~16.04.1
  • Added postgresql-client-13 version 13.1-1.pgdg16.04+1

Updates to packages available at build time only

  • Removed postgresql-server-dev-12
  • Added postgresql-server-dev-13 version 13.1-1.pgdg16.04+1

Stack: heroku-18

  • Removed postgresql-client-12
  • Updated ca-certificates from version 20201027ubuntu0.18.04.1 to 20210119~18.04.1
  • Added postgresql-client-13 version 13.1-1.pgdg18.04+1

Updates to packages available at build time only

  • Removed postgresql-server-dev-12
  • Added postgresql-server-dev-13 version 13.1-1.pgdg18.04+1

Stack: heroku-20

  • Removed postgresql-client-12
  • Updated ca-certificates from version 20201027ubuntu0.20.04.1 to 20210119~20.04.1
  • Added postgresql-client-13 version 13.1-1.pgdg20.04+1

Updates to packages available at build time only

  • Removed postgresql-server-dev-12
  • Added postgresql-server-dev-13 version 13.1-1.pgdg20.04+1