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

Change effective on 10 March 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

  • Updated git from version 1:2.7.4-0ubuntu1.9 to 1:2.7.4-0ubuntu1.10
  • Updated git-man from version 1:2.7.4-0ubuntu1.9 to 1:2.7.4-0ubuntu1.10
  • Updated libglib2.0-0 from version 2.48.2-0ubuntu4.6 to 2.48.2-0ubuntu4.7
  • Updated libglib2.0-data from version 2.48.2-0ubuntu4.6 to 2.48.2-0ubuntu4.7
  • Updated libpython2.7-minimal from version 2.7.12-1ubuntu0~16.04.13 to 2.7.12-1ubuntu0~16.04.18
  • Updated libpython2.7-stdlib from version 2.7.12-1ubuntu0~16.04.13 to 2.7.12-1ubuntu0~16.04.18
  • Updated libpython3.5-minimal from version 3.5.2-2ubuntu0~16.04.12 to 3.5.2-2ubuntu0~16.04.13
  • Updated libpython3.5-stdlib from version 3.5.2-2ubuntu0~16.04.12 to 3.5.2-2ubuntu0~16.04.13
  • Updated libtiff5 from version 4.0.6-1ubuntu0.7 to 4.0.6-1ubuntu0.8
  • Updated python2.7 from version 2.7.12-1ubuntu0~16.04.13 to 2.7.12-1ubuntu0~16.04.18
  • Updated python2.7-minimal from version 2.7.12-1ubuntu0~16.04.13 to 2.7.12-1ubuntu0~16.04.18
  • Updated python3.5 from version 3.5.2-2ubuntu0~16.04.12 to 3.5.2-2ubuntu0~16.04.13
  • Updated python3.5-minimal from version 3.5.2-2ubuntu0~16.04.12 to 3.5.2-2ubuntu0~16.04.13

Updates to packages available at build time only

  • Updated libglib2.0-bin from version 2.48.2-0ubuntu4.6 to 2.48.2-0ubuntu4.7
  • Updated libglib2.0-dev from version 2.48.2-0ubuntu4.6 to 2.48.2-0ubuntu4.7
  • Updated libpython2.7 from version 2.7.12-1ubuntu0~16.04.13 to 2.7.12-1ubuntu0~16.04.18
  • Updated libpython2.7-dev from version 2.7.12-1ubuntu0~16.04.13 to 2.7.12-1ubuntu0~16.04.18
  • Updated libtiff5-dev from version 4.0.6-1ubuntu0.7 to 4.0.6-1ubuntu0.8
  • Updated libtiffxx5 from version 4.0.6-1ubuntu0.7 to 4.0.6-1ubuntu0.8
  • Updated python2.7-dev from version 2.7.12-1ubuntu0~16.04.13 to 2.7.12-1ubuntu0~16.04.18

Stack: heroku-18

  • Updated binutils from version 2.30-21ubuntu1~18.04.4 to 2.30-21ubuntu1~18.04.5
  • Updated binutils-common from version 2.30-21ubuntu1~18.04.4 to 2.30-21ubuntu1~18.04.5
  • Updated binutils-x86-64-linux-gnu from version 2.30-21ubuntu1~18.04.4 to 2.30-21ubuntu1~18.04.5
  • Updated git from version 1:2.17.1-1ubuntu0.7 to 1:2.17.1-1ubuntu0.8
  • Updated git-man from version 1:2.17.1-1ubuntu0.7 to 1:2.17.1-1ubuntu0.8
  • Updated iproute2 from version 4.15.0-2ubuntu1.2 to 4.15.0-2ubuntu1.3
  • Updated libbinutils from version 2.30-21ubuntu1~18.04.4 to 2.30-21ubuntu1~18.04.5
  • Updated libglib2.0-0 from version 2.56.4-0ubuntu0.18.04.6 to 2.56.4-0ubuntu0.18.04.7
  • Updated libpython2.7-minimal from version 2.7.17-1~18.04ubuntu1.2 to 2.7.17-1~18.04ubuntu1.6
  • Updated libpython2.7-stdlib from version 2.7.17-1~18.04ubuntu1.2 to 2.7.17-1~18.04ubuntu1.6
  • Updated libpython3.6-minimal from version 3.6.9-1~18.04ubuntu1.3 to 3.6.9-1~18.04ubuntu1.4
  • Updated libpython3.6-stdlib from version 3.6.9-1~18.04ubuntu1.3 to 3.6.9-1~18.04ubuntu1.4
  • Updated libtiff5 from version 4.0.9-5ubuntu0.3 to 4.0.9-5ubuntu0.4
  • Updated libzstd1 from version 1.3.3+dfsg-2ubuntu1.1 to 1.3.3+dfsg-2ubuntu1.2
  • Updated python2.7 from version 2.7.17-1~18.04ubuntu1.2 to 2.7.17-1~18.04ubuntu1.6
  • Updated python2.7-minimal from version 2.7.17-1~18.04ubuntu1.2 to 2.7.17-1~18.04ubuntu1.6
  • Updated python3.6 from version 3.6.9-1~18.04ubuntu1.3 to 3.6.9-1~18.04ubuntu1.4
  • Updated python3.6-minimal from version 3.6.9-1~18.04ubuntu1.3 to 3.6.9-1~18.04ubuntu1.4

Updates to packages available at build time only

  • Updated libglib2.0-bin from version 2.56.4-0ubuntu0.18.04.6 to 2.56.4-0ubuntu0.18.04.7
  • Updated libglib2.0-data from version 2.56.4-0ubuntu0.18.04.6 to 2.56.4-0ubuntu0.18.04.7
  • Updated libglib2.0-dev from version 2.56.4-0ubuntu0.18.04.6 to 2.56.4-0ubuntu0.18.04.7
  • Updated libglib2.0-dev-bin from version 2.56.4-0ubuntu0.18.04.6 to 2.56.4-0ubuntu0.18.04.7
  • Updated libpython2.7 from version 2.7.17-1~18.04ubuntu1.2 to 2.7.17-1~18.04ubuntu1.6
  • Updated libpython2.7-dev from version 2.7.17-1~18.04ubuntu1.2 to 2.7.17-1~18.04ubuntu1.6
  • Updated libtiff-dev from version 4.0.9-5ubuntu0.3 to 4.0.9-5ubuntu0.4
  • Updated libtiff5-dev from version 4.0.9-5ubuntu0.3 to 4.0.9-5ubuntu0.4
  • Updated libtiffxx5 from version 4.0.9-5ubuntu0.3 to 4.0.9-5ubuntu0.4
  • Updated python2.7-dev from version 2.7.17-1~18.04ubuntu1.2 to 2.7.17-1~18.04ubuntu1.6

Stack: heroku-20

  • Updated bind9-dnsutils from version 1:9.16.1-0ubuntu2.6 to 1:9.16.1-0ubuntu2.7
  • Updated bind9-host from version 1:9.16.1-0ubuntu2.6 to 1:9.16.1-0ubuntu2.7
  • Updated bind9-libs from version 1:9.16.1-0ubuntu2.6 to 1:9.16.1-0ubuntu2.7
  • Updated dnsutils from version 1:9.16.1-0ubuntu2.6 to 1:9.16.1-0ubuntu2.7
  • Updated git from version 1:2.25.1-1ubuntu3 to 1:2.25.1-1ubuntu3.1
  • Updated git-man from version 1:2.25.1-1ubuntu3 to 1:2.25.1-1ubuntu3.1
  • Updated libglib2.0-0 from version 2.64.6-1~ubuntu20.04.1 to 2.64.6-1~ubuntu20.04.2
  • Updated libpython3.8-minimal from version 3.8.5-1~20.04 to 3.8.5-1~20.04.2