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

Change effective on 24 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 libglib2.0-0 from version 2.48.2-0ubuntu4.7 to 2.48.2-0ubuntu4.8
  • Updated libglib2.0-data from version 2.48.2-0ubuntu4.7 to 2.48.2-0ubuntu4.8
  • Updated libruby2.3 from version 2.3.1-2~ubuntu16.04.14 to 2.3.1-2~ubuntu16.04.15
  • Updated linux-libc-dev from version 4.4.0-203.235 to 4.4.0-206.238
  • Updated ruby2.3 from version 2.3.1-2~ubuntu16.04.14 to 2.3.1-2~ubuntu16.04.15

Updates to packages available at build time only

  • Updated libglib2.0-bin from version 2.48.2-0ubuntu4.7 to 2.48.2-0ubuntu4.8
  • Updated libglib2.0-dev from version 2.48.2-0ubuntu4.7 to 2.48.2-0ubuntu4.8
  • Updated ruby2.3-dev from version 2.3.1-2~ubuntu16.04.14 to 2.3.1-2~ubuntu16.04.15

Stack: heroku-18

  • Updated libglib2.0-0 from version 2.56.4-0ubuntu0.18.04.7 to 2.56.4-0ubuntu0.18.04.8
  • Updated libruby2.5 from version 2.5.1-1ubuntu1.7 to 2.5.1-1ubuntu1.8
  • Updated libsystemd0 from version 237-3ubuntu10.44 to 237-3ubuntu10.45
  • Updated libudev1 from version 237-3ubuntu10.44 to 237-3ubuntu10.45
  • Updated linux-libc-dev from version 4.15.0-136.140 to 4.15.0-139.143
  • Updated ruby2.5 from version 2.5.1-1ubuntu1.7 to 2.5.1-1ubuntu1.8

Updates to packages available at build time only

  • Updated libglib2.0-bin from version 2.56.4-0ubuntu0.18.04.7 to 2.56.4-0ubuntu0.18.04.8
  • Updated libglib2.0-data from version 2.56.4-0ubuntu0.18.04.7 to 2.56.4-0ubuntu0.18.04.8
  • Updated libglib2.0-dev from version 2.56.4-0ubuntu0.18.04.7 to 2.56.4-0ubuntu0.18.04.8
  • Updated libglib2.0-dev-bin from version 2.56.4-0ubuntu0.18.04.7 to 2.56.4-0ubuntu0.18.04.8
  • Updated libsystemd-dev from version 237-3ubuntu10.44 to 237-3ubuntu10.45
  • Updated libudev-dev from version 237-3ubuntu10.44 to 237-3ubuntu10.45
  • Updated ruby2.5-dev from version 2.5.1-1ubuntu1.7 to 2.5.1-1ubuntu1.8

Stack: heroku-20

  • Updated libglib2.0-0 from version 2.64.6-1~ubuntu20.04.2 to 2.64.6-1~ubuntu20.04.3
  • Updated libruby2.7 from version 2.7.0-5ubuntu1.2 to 2.7.0-5ubuntu1.3
  • Updated libsystemd0 from version 245.4-4ubuntu3.4 to 245.4-4ubuntu3.5
  • Updated libudev1 from version 245.4-4ubuntu3.4 to 245.4-4ubuntu3.5
  • Updated linux-libc-dev from version 5.4.0-66.74 to 5.4.0-67.75
  • Updated openssh-client from version 1:8.2p1-4ubuntu0.1 to 1:8.2p1-4ubuntu0.2
  • Updated openssh-server from version 1:8.2p1-4ubuntu0.1 to 1:8.2p1-4ubuntu0.2
  • Updated openssh-sftp-server from version 1:8.2p1-4ubuntu0.1 to 1:8.2p1-4ubuntu0.2
  • Updated ruby2.7 from version 2.7.0-5ubuntu1.2 to 2.7.0-5ubuntu1.3

Updates to packages available at build time only

  • Updated libglib2.0-bin from version 2.64.6-1~ubuntu20.04.2 to 2.64.6-1~ubuntu20.04.3
  • Updated libglib2.0-data from version 2.64.6-1~ubuntu20.04.2 to 2.64.6-1~ubuntu20.04.3
  • Updated libglib2.0-dev from version 2.64.6-1~ubuntu20.04.2 to 2.64.6-1~ubuntu20.04.3
  • Updated libglib2.0-dev-bin from version 2.64.6-1~ubuntu20.04.2 to 2.64.6-1~ubuntu20.04.3
  • Updated libpython2.7-minimal from version 2.7.18-1~20.04 to 2.7.18-1~20.04.1
  • Updated libpython2.7-stdlib from version 2.7.18-1~20.04 to 2.7.18-1~20.04.1
  • Updated libsystemd-dev from version 245.4-4ubuntu3.4 to 245.4-4ubuntu3.5
  • Updated libudev-dev from version 245.4-4ubuntu3.4 to 245.4-4ubuntu3.5
  • Updated python2.7 from version 2.7.18-1~20.04 to 2.7.18-1~20.04.1
  • Updated python2.7-minimal from version 2.7.18-1~20.04 to 2.7.18-1~20.04.1
  • Updated python3-pygments from version 2.3.1+dfsg-1ubuntu2 to 2.3.1+dfsg-1ubuntu2.1
  • Updated ruby2.7-dev from version 2.7.0-5ubuntu1.2 to 2.7.0-5ubuntu1.3