Heroku-18 and Heroku-20 Stack Images Updated

Change effective on 11 October 2021

We have updated the 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.

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-18

  • Updated distro-info-data from version 0.37ubuntu0.11 to 0.37ubuntu0.12
  • Updated libpq5 from version 13.4-1.pgdg18.04+1 to 14.0-1.pgdg18.04+1
  • Updated linux-libc-dev from version 4.15.0-158.166 to 4.15.0-159.167
  • Updated postgresql-client-13 from version 13.4-1.pgdg18.04+1 to 13.4-4.pgdg18.04+1
  • Updated postgresql-client-common from version 226.pgdg18.04+1 to 231.pgdg18.04+1
  • Updated tzdata from version 2021a-0ubuntu0.18.04 to 2021a-2ubuntu0.18.04

Updates to packages available at build time only

  • Updated libpq-dev from version 13.4-1.pgdg18.04+1 to 14.0-1.pgdg18.04+1
  • Updated mercurial from version 4.5.3-1ubuntu2.1 to 4.5.3-1ubuntu2.2
  • Updated mercurial-common from version 4.5.3-1ubuntu2.1 to 4.5.3-1ubuntu2.2
  • Updated postgresql-common from version 226.pgdg18.04+1 to 231.pgdg18.04+1
  • Updated postgresql-server-dev-13 from version 13.4-1.pgdg18.04+1 to 13.4-4.pgdg18.04+1

Stack: heroku-20

  • Updated distro-info-data from version 0.43ubuntu1.6 to 0.43ubuntu1.8
  • Updated libmysqlclient21 from version 8.0.26-0ubuntu0.20.04.2 to 8.0.26-0ubuntu0.20.04.3
  • Updated libpam-modules from version 1.3.1-5ubuntu4.2 to 1.3.1-5ubuntu4.3
  • Updated libpam-modules-bin from version 1.3.1-5ubuntu4.2 to 1.3.1-5ubuntu4.3
  • Updated libpam-runtime from version 1.3.1-5ubuntu4.2 to 1.3.1-5ubuntu4.3
  • Updated libpam0g from version 1.3.1-5ubuntu4.2 to 1.3.1-5ubuntu4.3
  • Updated libpq5 from version 13.4-1.pgdg20.04+1 to 14.0-1.pgdg20.04+1
  • Updated libpython3.8-minimal from version 3.8.10-0ubuntu1~20.04 to 3.8.10-0ubuntu1~20.04.1
  • Updated libpython3.8-stdlib from version 3.8.10-0ubuntu1~20.04 to 3.8.10-0ubuntu1~20.04.1
  • Updated linux-libc-dev from version 5.4.0-86.97 to 5.4.0-88.99
  • Updated postgresql-client-13 from version 13.4-1.pgdg20.04+1 to 13.4-4.pgdg20.04+1
  • Updated postgresql-client-common from version 226.pgdg20.04+1 to 231.pgdg20.04+1
  • Updated python3.8 from version 3.8.10-0ubuntu1~20.04 to 3.8.10-0ubuntu1~20.04.1
  • Updated python3.8-minimal from version 3.8.10-0ubuntu1~20.04 to 3.8.10-0ubuntu1~20.04.1
  • Updated tzdata from version 2021a-0ubuntu0.20.04 to 2021a-2ubuntu0.20.04

Updates to packages available at build time only

  • Updated libmysqlclient-dev from version 8.0.26-0ubuntu0.20.04.2 to 8.0.26-0ubuntu0.20.04.3
  • Updated libpam0g-dev from version 1.3.1-5ubuntu4.2 to 1.3.1-5ubuntu4.3
  • Updated libpq-dev from version 13.4-1.pgdg20.04+1 to 14.0-1.pgdg20.04+1
  • Updated libpython3.8 from version 3.8.10-0ubuntu1~20.04 to 3.8.10-0ubuntu1~20.04.1
  • Updated libpython3.8-dev from version 3.8.10-0ubuntu1~20.04 to 3.8.10-0ubuntu1~20.04.1
  • Updated postgresql-common from version 226.pgdg20.04+1 to 231.pgdg20.04+1
  • Updated postgresql-server-dev-13 from version 13.4-1.pgdg20.04+1 to 13.4-4.pgdg20.04+1
  • Updated python3.8-dev from version 3.8.10-0ubuntu1~20.04 to 3.8.10-0ubuntu1~20.04.1