Heroku-16 and Heroku-18 Stack Images Updated

Change effective on 20 October 2020

We have updated the heroku-16 and heroku-18 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-16

  • Updated libpam-modules from version 1.1.8-3.2ubuntu2.1 to 1.1.8-3.2ubuntu2.3
  • Updated libpam-modules-bin from version 1.1.8-3.2ubuntu2.1 to 1.1.8-3.2ubuntu2.3
  • Updated libpam-runtime from version 1.1.8-3.2ubuntu2.1 to 1.1.8-3.2ubuntu2.3
  • Updated libpam0g from version 1.1.8-3.2ubuntu2.1 to 1.1.8-3.2ubuntu2.3
  • Updated libpython2.7-minimal from version 2.7.12-1ubuntu0~16.04.12 to 2.7.12-1ubuntu0~16.04.13
  • Updated libpython2.7-stdlib from version 2.7.12-1ubuntu0~16.04.12 to 2.7.12-1ubuntu0~16.04.13
  • Updated libpython3.5-minimal from version 3.5.2-2ubuntu0~16.04.11 to 3.5.2-2ubuntu0~16.04.12
  • Updated libpython3.5-stdlib from version 3.5.2-2ubuntu0~16.04.11 to 3.5.2-2ubuntu0~16.04.12
  • Updated linux-libc-dev from version 4.4.0-190.220 to 4.4.0-193.224
  • Updated postgresql-client-common from version 217.pgdg16.04+1 to 220.pgdg16.04+1
  • Updated python2.7 from version 2.7.12-1ubuntu0~16.04.12 to 2.7.12-1ubuntu0~16.04.13
  • Updated python2.7-minimal from version 2.7.12-1ubuntu0~16.04.12 to 2.7.12-1ubuntu0~16.04.13
  • Updated python3-urllib3 from version 1.13.1-2ubuntu0.16.04.3 to 1.13.1-2ubuntu0.16.04.4
  • Updated python3.5 from version 3.5.2-2ubuntu0~16.04.11 to 3.5.2-2ubuntu0~16.04.12
  • Updated python3.5-minimal from version 3.5.2-2ubuntu0~16.04.11 to 3.5.2-2ubuntu0~16.04.12

Updates to packages available at build time only

  • Updated libpam0g-dev from version 1.1.8-3.2ubuntu2.1 to 1.1.8-3.2ubuntu2.3
  • Updated libpython2.7 from version 2.7.12-1ubuntu0~16.04.12 to 2.7.12-1ubuntu0~16.04.13
  • Updated libpython2.7-dev from version 2.7.12-1ubuntu0~16.04.12 to 2.7.12-1ubuntu0~16.04.13
  • Updated postgresql-common from version 217.pgdg16.04+1 to 220.pgdg16.04+1
  • Updated python2.7-dev from version 2.7.12-1ubuntu0~16.04.12 to 2.7.12-1ubuntu0~16.04.13

Stack: heroku-18

  • Updated libpython2.7-minimal from version 2.7.17-1~18.04ubuntu1.1 to 2.7.17-1~18.04ubuntu1.2
  • Updated libpython2.7-stdlib from version 2.7.17-1~18.04ubuntu1.1 to 2.7.17-1~18.04ubuntu1.2
  • Updated libpython3.6-minimal from version 3.6.9-1~18.04ubuntu1.1 to 3.6.9-1~18.04ubuntu1.3
  • Updated libpython3.6-stdlib from version 3.6.9-1~18.04ubuntu1.1 to 3.6.9-1~18.04ubuntu1.3
  • Updated linux-libc-dev from version 4.15.0-118.119 to 4.15.0-122.124
  • Updated postgresql-client-common from version 217.pgdg18.04+1 to 220.pgdg18.04+1
  • Updated python2.7 from version 2.7.17-1~18.04ubuntu1.1 to 2.7.17-1~18.04ubuntu1.2
  • Updated python2.7-minimal from version 2.7.17-1~18.04ubuntu1.1 to 2.7.17-1~18.04ubuntu1.2
  • Updated python3.6 from version 3.6.9-1~18.04ubuntu1.1 to 3.6.9-1~18.04ubuntu1.3
  • Updated python3.6-minimal from version 3.6.9-1~18.04ubuntu1.1 to 3.6.9-1~18.04ubuntu1.3
  • Added libwebpdemux2 version 0.6.1-2
  • Added libwebpmux3 version 0.6.1-2

Updates to packages available at build time only

  • Updated libpython2.7 from version 2.7.17-1~18.04ubuntu1.1 to 2.7.17-1~18.04ubuntu1.2
  • Updated libpython2.7-dev from version 2.7.17-1~18.04ubuntu1.1 to 2.7.17-1~18.04ubuntu1.2
  • Updated postgresql-common from version 217.pgdg18.04+1 to 220.pgdg18.04+1
  • Updated python2.7-dev from version 2.7.17-1~18.04ubuntu1.1 to 2.7.17-1~18.04ubuntu1.2