Heroku-22 and Heroku-24 stacks updated

Change effective on 08 April 2026

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 bind9-dnsutils from version 1:9.18.39-0ubuntu0.22.04.2 to 1:9.18.39-0ubuntu0.22.04.3
  • Updated bind9-host from version 1:9.18.39-0ubuntu0.22.04.2 to 1:9.18.39-0ubuntu0.22.04.3
  • Updated bind9-libs from version 1:9.18.39-0ubuntu0.22.04.2 to 1:9.18.39-0ubuntu0.22.04.3
  • Updated ca-certificates-java from version 20190909ubuntu1.2 to 20190909ubuntu1.3
  • Updated dnsutils from version 1:9.18.39-0ubuntu0.22.04.2 to 1:9.18.39-0ubuntu0.22.04.3
  • Updated libcairo-gobject2 from version 1.16.0-5ubuntu2 to 1.16.0-5ubuntu2.1
  • Updated libcairo2 from version 1.16.0-5ubuntu2 to 1.16.0-5ubuntu2.1
  • Updated libsystemd0 from version 249.11-0ubuntu3.17 to 249.11-0ubuntu3.20
  • Updated libudev1 from version 249.11-0ubuntu3.17 to 249.11-0ubuntu3.20
  • Updated linux-libc-dev from version 5.15.0-173.183 to 5.15.0-174.184
  • Updated systemd from version 249.11-0ubuntu3.17 to 249.11-0ubuntu3.20
  • Updated tzdata from version 2025b-0ubuntu0.22.04.1 to 2026a-0ubuntu0.22.04.1

Updates to packages available at build time only

  • Updated libarchive13 from version 3.6.0-1ubuntu1.5 to 3.6.0-1ubuntu1.6
  • Updated libcairo-script-interpreter2 from version 1.16.0-5ubuntu2 to 1.16.0-5ubuntu2.1
  • Updated libcairo2-dev from version 1.16.0-5ubuntu2 to 1.16.0-5ubuntu2.1
  • Updated libsystemd-dev from version 249.11-0ubuntu3.17 to 249.11-0ubuntu3.20
  • Updated libudev-dev from version 249.11-0ubuntu3.17 to 249.11-0ubuntu3.20

Stack: heroku-24

  • Updated bind9-dnsutils from version 1:9.18.39-0ubuntu0.24.04.2 to 1:9.18.39-0ubuntu0.24.04.3
  • Updated bind9-host from version 1:9.18.39-0ubuntu0.24.04.2 to 1:9.18.39-0ubuntu0.24.04.3
  • Updated bind9-libs from version 1:9.18.39-0ubuntu0.24.04.2 to 1:9.18.39-0ubuntu0.24.04.3
  • Updated libarchive13t64 from version 3.7.2-2ubuntu0.5 to 3.7.2-2ubuntu0.6
  • Updated libsystemd0 from version 255.4-1ubuntu8.12 to 255.4-1ubuntu8.15
  • Updated libudev1 from version 255.4-1ubuntu8.12 to 255.4-1ubuntu8.15
  • Updated tzdata from version 2025b-0ubuntu0.24.04.1 to 2026a-0ubuntu0.24.04.1

Updates to packages available at build time only

  • Updated linux-libc-dev from version 6.8.0-106.106 to 6.8.0-107.107