Heroku-18 and Heroku-20 Stack Images Updated

Change effective on 27 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 ca-certificates from version 20210119~18.04.1 to 20210119~18.04.2
  • Updated curl from version 7.58.0-2ubuntu3.14 to 7.58.0-2ubuntu3.16
  • Updated libcurl3-gnutls from version 7.58.0-2ubuntu3.14 to 7.58.0-2ubuntu3.16
  • Updated libcurl4 from version 7.58.0-2ubuntu3.14 to 7.58.0-2ubuntu3.16
  • Updated libgcrypt20 from version 1.8.1-4ubuntu1.2 to 1.8.1-4ubuntu1.3
  • Updated libgnutls-openssl27 from version 3.5.18-1ubuntu1.4 to 3.5.18-1ubuntu1.5
  • Updated libgnutls30 from version 3.5.18-1ubuntu1.4 to 3.5.18-1ubuntu1.5
  • Updated libgnutlsxx28 from version 3.5.18-1ubuntu1.4 to 3.5.18-1ubuntu1.5
  • Updated libsystemd0 from version 237-3ubuntu10.51 to 237-3ubuntu10.52
  • Updated libudev1 from version 237-3ubuntu10.51 to 237-3ubuntu10.52
  • Updated linux-libc-dev from version 4.15.0-156.163 to 4.15.0-158.166

Updates to packages available at build time only

  • Updated libcurl4-openssl-dev from version 7.58.0-2ubuntu3.14 to 7.58.0-2ubuntu3.16
  • Updated libgcrypt20-dev from version 1.8.1-4ubuntu1.2 to 1.8.1-4ubuntu1.3
  • Updated libgnutls-dane0 from version 3.5.18-1ubuntu1.4 to 3.5.18-1ubuntu1.5
  • Updated libgnutls28-dev from version 3.5.18-1ubuntu1.4 to 3.5.18-1ubuntu1.5
  • Updated libsystemd-dev from version 237-3ubuntu10.51 to 237-3ubuntu10.52
  • Updated libudev-dev from version 237-3ubuntu10.51 to 237-3ubuntu10.52

Stack: heroku-20

  • Updated ca-certificates from version 20210119~20.04.1 to 20210119~20.04.2
  • Updated curl from version 7.68.0-1ubuntu2.6 to 7.68.0-1ubuntu2.7
  • Updated libcurl3-gnutls from version 7.68.0-1ubuntu2.6 to 7.68.0-1ubuntu2.7
  • Updated libcurl4 from version 7.68.0-1ubuntu2.6 to 7.68.0-1ubuntu2.7
  • Updated libgcrypt20 from version 1.8.5-5ubuntu1 to 1.8.5-5ubuntu1.1
  • Updated libprocps8 from version 2:3.3.16-1ubuntu2.2 to 2:3.3.16-1ubuntu2.3
  • Updated libsystemd0 from version 245.4-4ubuntu3.11 to 245.4-4ubuntu3.13
  • Updated libtiff5 from version 4.1.0+git191117-2ubuntu0.20.04.1 to 4.1.0+git191117-2ubuntu0.20.04.2
  • Updated libudev1 from version 245.4-4ubuntu3.11 to 245.4-4ubuntu3.13
  • Updated linux-libc-dev from version 5.4.0-84.94 to 5.4.0-86.97
  • Updated procps from version 2:3.3.16-1ubuntu2.2 to 2:3.3.16-1ubuntu2.3

Updates to packages available at build time only

  • Updated libcurl4-openssl-dev from version 7.68.0-1ubuntu2.6 to 7.68.0-1ubuntu2.7
  • Updated libgcrypt20-dev from version 1.8.5-5ubuntu1 to 1.8.5-5ubuntu1.1
  • Updated libsystemd-dev from version 245.4-4ubuntu3.11 to 245.4-4ubuntu3.13
  • Updated libtiff-dev from version 4.1.0+git191117-2ubuntu0.20.04.1 to 4.1.0+git191117-2ubuntu0.20.04.2
  • Updated libtiffxx5 from version 4.1.0+git191117-2ubuntu0.20.04.1 to 4.1.0+git191117-2ubuntu0.20.04.2
  • Updated libudev-dev from version 245.4-4ubuntu3.11 to 245.4-4ubuntu3.13