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

Change effective on 01 February 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 libmysqlclient20 from version 5.7.32-0ubuntu0.16.04.1 to 5.7.33-0ubuntu0.16.04.1
  • Updated linux-libc-dev from version 4.4.0-198.230 to 4.4.0-201.233
  • Updated mysql-common from version 5.7.32-0ubuntu0.16.04.1 to 5.7.33-0ubuntu0.16.04.1
  • Updated tar from version 1.28-2.1ubuntu0.1 to 1.28-2.1ubuntu0.2
  • Updated tzdata from version 2020f-0ubuntu0.16.04 to 2021a-0ubuntu0.16.04

Updates to packages available at build time only

  • Updated libjasper-dev from version 1.900.1-debian1-2.4ubuntu1.2 to 1.900.1-debian1-2.4ubuntu1.3
  • Updated libjasper1 from version 1.900.1-debian1-2.4ubuntu1.2 to 1.900.1-debian1-2.4ubuntu1.3
  • Updated libmysqlclient-dev from version 5.7.32-0ubuntu0.16.04.1 to 5.7.33-0ubuntu0.16.04.1

Stack: heroku-18

  • Updated libaudit-common from version 1:2.8.2-1ubuntu1 to 1:2.8.2-1ubuntu1.1
  • Updated libaudit1 from version 1:2.8.2-1ubuntu1 to 1:2.8.2-1ubuntu1.1
  • Updated libmysqlclient20 from version 5.7.32-0ubuntu0.18.04.1 to 5.7.33-0ubuntu0.18.04.1
  • Updated libsystemd0 from version 237-3ubuntu10.43 to 237-3ubuntu10.44
  • Updated libudev1 from version 237-3ubuntu10.43 to 237-3ubuntu10.44
  • Updated linux-libc-dev from version 4.15.0-130.134 to 4.15.0-135.139
  • Updated tar from version 1.29b-2ubuntu0.1 to 1.29b-2ubuntu0.2
  • Updated tzdata from version 2020f-0ubuntu0.18.04 to 2021a-0ubuntu0.18.04

Updates to packages available at build time only

  • Updated libaudit-dev from version 1:2.8.2-1ubuntu1 to 1:2.8.2-1ubuntu1.1
  • Updated libmysqlclient-dev from version 5.7.32-0ubuntu0.18.04.1 to 5.7.33-0ubuntu0.18.04.1
  • Updated libsystemd-dev from version 237-3ubuntu10.43 to 237-3ubuntu10.44
  • Updated libudev-dev from version 237-3ubuntu10.43 to 237-3ubuntu10.44

Stack: heroku-20

  • Updated apt from version 2.0.2ubuntu0.2 to 2.0.4
  • Updated apt-transport-https from version 2.0.2ubuntu0.2 to 2.0.4
  • Updated apt-utils from version 2.0.2ubuntu0.2 to 2.0.4
  • Updated base-files from version 11ubuntu5.2 to 11ubuntu5.3
  • Updated language-pack-en from version 1:20.04+20200709 to 1:20.04+20210121
  • Updated language-pack-en-base from version 1:20.04+20200709 to 1:20.04+20210121
  • Updated libapt-pkg6.0 from version 2.0.2ubuntu0.2 to 2.0.4
  • Updated libc-bin from version 2.31-0ubuntu9.1 to 2.31-0ubuntu9.2
  • Updated libc-dev-bin from version 2.31-0ubuntu9.1 to 2.31-0ubuntu9.2
  • Updated libc6 from version 2.31-0ubuntu9.1 to 2.31-0ubuntu9.2
  • Updated libc6-dev from version 2.31-0ubuntu9.1 to 2.31-0ubuntu9.2
  • Updated libglib2.0-0 from version 2.64.3-1~ubuntu20.04.1 to 2.64.6-1~ubuntu20.04.1
  • Updated libmysqlclient21 from version 8.0.22-0ubuntu0.20.04.3 to 8.0.23-0ubuntu0.20.04.1
  • Updated libsystemd0 from version 245.4-4ubuntu3.3 to 245.4-4ubuntu3.4
  • Updated libudev1 from version 245.4-4ubuntu3.3 to 245.4-4ubuntu3.4
  • Updated linux-libc-dev from version 5.4.0-60.67 to 5.4.0-65.73
  • Updated locales from version 2.31-0ubuntu9.1 to 2.31-0ubuntu9.2
  • Updated tar from version 1.30+dfsg-7 to 1.30+dfsg-7ubuntu0.20.04.1
  • Updated tzdata from version 2020f-0ubuntu0.20.04 to 2021a-0ubuntu0.20.04

Updates to packages available at build time only

  • Updated jq from version 1.6-1 to 1.6-1ubuntu0.20.04.1
  • Updated libapt-pkg-dev from version 2.0.2ubuntu0.2 to 2.0.4
  • Updated libc6-i386 from version 2.31-0ubuntu9.1 to 2.31-0ubuntu9.2
  • Updated libglib2.0-bin from version 2.64.3-1~ubuntu20.04.1 to 2.64.6-1~ubuntu20.04.1
  • Updated libglib2.0-data from version 2.64.3-1~ubuntu20.04.1 to 2.64.6-1~ubuntu20.04.1
  • Updated libglib2.0-dev from version 2.64.3-1~ubuntu20.04.1 to 2.64.6-1~ubuntu20.04.1
  • Updated libglib2.0-dev-bin from version 2.64.3-1~ubuntu20.04.1 to 2.64.6-1~ubuntu20.04.1
  • Updated libjq1 from version 1.6-1 to 1.6-1ubuntu0.20.04.1
  • Updated libmysqlclient-dev from version 8.0.22-0ubuntu0.20.04.3 to 8.0.23-0ubuntu0.20.04.1
  • Updated libsystemd-dev from version 245.4-4ubuntu3.3 to 245.4-4ubuntu3.4
  • Updated libudev-dev from version 245.4-4ubuntu3.3 to 245.4-4ubuntu3.4