Heroku-22 and Heroku-24 stacks updated

Change effective on 05 May 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.

Stack: heroku-22

  • Updated distro-info-data from version 0.52ubuntu0.8 to 0.52ubuntu0.9
  • Updated libpoppler-glib8 from version 22.02.0-2ubuntu0.7 to 22.02.0-2ubuntu0.8
  • Updated libpoppler118 from version 22.02.0-2ubuntu0.7 to 22.02.0-2ubuntu0.8
  • Updated libxml2 from version 2.9.13+dfsg-1ubuntu0.6 to 2.9.13+dfsg-1ubuntu0.7
  • Updated linux-libc-dev from version 5.15.0-138.148 to 5.15.0-139.149
  • Updated openssh-client from version 1:8.9p1-3ubuntu0.11 to 1:8.9p1-3ubuntu0.13
  • Updated openssh-server from version 1:8.9p1-3ubuntu0.11 to 1:8.9p1-3ubuntu0.13
  • Updated openssh-sftp-server from version 1:8.9p1-3ubuntu0.11 to 1:8.9p1-3ubuntu0.13
  • Updated poppler-utils from version 22.02.0-2ubuntu0.7 to 22.02.0-2ubuntu0.8

Updates to packages available at build time only

  • Updated libarchive13 from version 3.6.0-1ubuntu1.3 to 3.6.0-1ubuntu1.4
  • Updated libxml2-dev from version 2.9.13+dfsg-1ubuntu0.6 to 2.9.13+dfsg-1ubuntu0.7

Stack: heroku-24

  • Updated ghostscript from version 10.02.1~dfsg1-0ubuntu7.5 to 10.02.1~dfsg1-0ubuntu7.6
  • Updated libarchive13t64 from version 3.7.2-2ubuntu0.3 to 3.7.2-2ubuntu0.4
  • Updated libgs-common from version 10.02.1~dfsg1-0ubuntu7.5 to 10.02.1~dfsg1-0ubuntu7.6
  • Updated libgs10 from version 10.02.1~dfsg1-0ubuntu7.5 to 10.02.1~dfsg1-0ubuntu7.6
  • Updated libgs10-common from version 10.02.1~dfsg1-0ubuntu7.5 to 10.02.1~dfsg1-0ubuntu7.6
  • Updated libpoppler-glib8t64 from version 24.02.0-1ubuntu9.3 to 24.02.0-1ubuntu9.4
  • Updated libpoppler134 from version 24.02.0-1ubuntu9.3 to 24.02.0-1ubuntu9.4
  • Updated libxml2 from version 2.9.14+dfsg-1.3ubuntu3.2 to 2.9.14+dfsg-1.3ubuntu3.3
  • Updated openssh-client from version 1:9.6p1-3ubuntu13.9 to 1:9.6p1-3ubuntu13.11
  • Updated openssh-server from version 1:9.6p1-3ubuntu13.9 to 1:9.6p1-3ubuntu13.11
  • Updated openssh-sftp-server from version 1:9.6p1-3ubuntu13.9 to 1:9.6p1-3ubuntu13.11
  • Updated poppler-utils from version 24.02.0-1ubuntu9.3 to 24.02.0-1ubuntu9.4

Updates to packages available at build time only

  • Updated libxml2-dev from version 2.9.14+dfsg-1.3ubuntu3.2 to 2.9.14+dfsg-1.3ubuntu3.3
  • Updated linux-libc-dev from version 6.8.0-58.60 to 6.8.0-59.61