Heroku-22 and Heroku-24 stacks updated

Change effective on 03 December 2025

We updated the heroku-22 and heroku-24 stacks to pick up security fixes in upstream packages. The new base images for each stack roll out automatically to the Common Runtime over the next 48 hours, followed by Private Spaces.

If you use Heroku’s default buildpack-powered build system/stacks, you don’t need to redeploy your app to include these changes. We automatically restart any running dynos as we roll out the new base images for each stack. For Cedar-generation apps, each time a dyno starts, the slug applies on top of the most recent base image. For Fir-generation apps, the built image gets rebased on top of the most recent base image.

If your app uses Heroku’s container stack (most don’t), you must rebuild your app’s Docker image to pick up updates in the base image specified in your Dockerfile.

See this Dev Center article for an overview of the packages available in each stack’s base image.

Changelog of packages

Stack: heroku-22

  • Updated binutils from version 2.38-4ubuntu2.10 to 2.38-4ubuntu2.11
  • Updated binutils-aarch64-linux-gnu/binutils-x86-64-linux-gnu from version 2.38-4ubuntu2.10 to 2.38-4ubuntu2.11
  • Updated binutils-common from version 2.38-4ubuntu2.10 to 2.38-4ubuntu2.11
  • Updated libavahi-client3 from version 0.8-5ubuntu5.2 to 0.8-5ubuntu5.3
  • Updated libavahi-common-data from version 0.8-5ubuntu5.2 to 0.8-5ubuntu5.3
  • Updated libavahi-common3 from version 0.8-5ubuntu5.2 to 0.8-5ubuntu5.3
  • Updated libbinutils from version 2.38-4ubuntu2.10 to 2.38-4ubuntu2.11
  • Updated libctf-nobfd0 from version 2.38-4ubuntu2.10 to 2.38-4ubuntu2.11
  • Updated libctf0 from version 2.38-4ubuntu2.10 to 2.38-4ubuntu2.11
  • Updated libcups2 from version 2.4.1op1-1ubuntu4.12 to 2.4.1op1-1ubuntu4.15
  • Updated libmysqlclient21 from version 8.0.43-0ubuntu0.22.04.2 to 8.0.44-0ubuntu0.22.04.1
  • Updated libpython3.10-minimal from version 3.10.12-1~22.04.11 to 3.10.12-1~22.04.12
  • Updated libpython3.10-stdlib from version 3.10.12-1~22.04.11 to 3.10.12-1~22.04.12
  • Updated linux-libc-dev from version 5.15.0-161.171 to 5.15.0-163.173
  • Updated python3.10 from version 3.10.12-1~22.04.11 to 3.10.12-1~22.04.12
  • Updated python3.10-minimal from version 3.10.12-1~22.04.11 to 3.10.12-1~22.04.12

Updates to packages available at build time only

  • Updated libmysqlclient-dev from version 8.0.43-0ubuntu0.22.04.2 to 8.0.44-0ubuntu0.22.04.1
  • Updated libpython3.10 from version 3.10.12-1~22.04.11 to 3.10.12-1~22.04.12
  • Updated libpython3.10-dev from version 3.10.12-1~22.04.11 to 3.10.12-1~22.04.12
  • Updated libunbound8 from version 1.13.1-1ubuntu5.13 to 1.13.1-1ubuntu5.14
  • Updated python3.10-dev from version 3.10.12-1~22.04.11 to 3.10.12-1~22.04.12

Stack: heroku-24

  • Updated binutils from version 2.42-4ubuntu2.6 to 2.42-4ubuntu2.7
  • Updated binutils-aarch64-linux-gnu/binutils-x86-64-linux-gnu from version 2.42-4ubuntu2.6 to 2.42-4ubuntu2.7
  • Updated binutils-common from version 2.42-4ubuntu2.6 to 2.42-4ubuntu2.7
  • Updated libbinutils from version 2.42-4ubuntu2.6 to 2.42-4ubuntu2.7
  • Updated libctf-nobfd0 from version 2.42-4ubuntu2.6 to 2.42-4ubuntu2.7
  • Updated libctf0 from version 2.42-4ubuntu2.6 to 2.42-4ubuntu2.7
  • Updated libcups2t64 from version 2.4.7-1.2ubuntu7.4 to 2.4.7-1.2ubuntu7.7
  • Updated libgprofng0 from version 2.42-4ubuntu2.6 to 2.42-4ubuntu2.7
  • Updated libmysqlclient21 from version 8.0.43-0ubuntu0.24.04.2 to 8.0.44-0ubuntu0.24.04.1
  • Updated libsframe1 from version 2.42-4ubuntu2.6 to 2.42-4ubuntu2.7

Updates to packages available at build time only

  • Updated libmysqlclient-dev from version 8.0.43-0ubuntu0.24.04.2 to 8.0.44-0ubuntu0.24.04.1
  • Updated libpython3.12-minimal from version 3.12.3-1ubuntu0.8 to 3.12.3-1ubuntu0.9
  • Updated libpython3.12-stdlib from version 3.12.3-1ubuntu0.8 to 3.12.3-1ubuntu0.9
  • Updated libunbound8 from version 1.19.2-1ubuntu3.6 to 1.19.2-1ubuntu3.7
  • Updated linux-libc-dev from version 6.8.0-87.88 to 6.8.0-88.89
  • Updated python3.12 from version 3.12.3-1ubuntu0.8 to 3.12.3-1ubuntu0.9
  • Updated python3.12-minimal from version 3.12.3-1ubuntu0.8 to 3.12.3-1ubuntu0.9