Heroku-18 and Heroku-20 Stack Images Updated

Change effective on 13 September 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 base-files from version 10.1ubuntu2.10 to 10.1ubuntu2.11
  • Updated git from version 1:2.17.1-1ubuntu0.8 to 1:2.17.1-1ubuntu0.9
  • Updated git-man from version 1:2.17.1-1ubuntu0.8 to 1:2.17.1-1ubuntu0.9
  • Updated libmysqlclient20 from version 5.7.35-0ubuntu0.18.04.1 to 5.7.35-0ubuntu0.18.04.2

Updates to packages available at build time only

  • Updated libmysqlclient-dev from version 5.7.35-0ubuntu0.18.04.1 to 5.7.35-0ubuntu0.18.04.2

Stack: heroku-20

  • Updated ghostscript from version 9.50~dfsg-5ubuntu4.2 to 9.50~dfsg-5ubuntu4.3
  • Updated git from version 1:2.25.1-1ubuntu3.1 to 1:2.25.1-1ubuntu3.2
  • Updated git-man from version 1:2.25.1-1ubuntu3.1 to 1:2.25.1-1ubuntu3.2
  • Updated libgs9 from version 9.50~dfsg-5ubuntu4.2 to 9.50~dfsg-5ubuntu4.3
  • Updated libgs9-common from version 9.50~dfsg-5ubuntu4.2 to 9.50~dfsg-5ubuntu4.3

Updates to packages available at build time only

  • Updated libgs-dev from version 9.50~dfsg-5ubuntu4.2 to 9.50~dfsg-5ubuntu4.3