Heroku-18 and Heroku-20 Stack Images Updated

Change effective on 28 October 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 bind9-host from version 1:9.11.3+dfsg-1ubuntu1.15 to 1:9.11.3+dfsg-1ubuntu1.16
  • Updated binutils from version 2.30-21ubuntu1~18.04.5 to 2.30-21ubuntu1~18.04.7
  • Updated binutils-common from version 2.30-21ubuntu1~18.04.5 to 2.30-21ubuntu1~18.04.7
  • Updated binutils-x86-64-linux-gnu from version 2.30-21ubuntu1~18.04.5 to 2.30-21ubuntu1~18.04.7
  • Updated distro-info-data from version 0.37ubuntu0.12 to 0.37ubuntu0.13
  • Updated dnsutils from version 1:9.11.3+dfsg-1ubuntu1.15 to 1:9.11.3+dfsg-1ubuntu1.16
  • Updated libbind9-160 from version 1:9.11.3+dfsg-1ubuntu1.15 to 1:9.11.3+dfsg-1ubuntu1.16
  • Updated libbinutils from version 2.30-21ubuntu1~18.04.5 to 2.30-21ubuntu1~18.04.7
  • Updated libdns1100 from version 1:9.11.3+dfsg-1ubuntu1.15 to 1:9.11.3+dfsg-1ubuntu1.16
  • Updated libirs160 from version 1:9.11.3+dfsg-1ubuntu1.15 to 1:9.11.3+dfsg-1ubuntu1.16
  • Updated libisc169 from version 1:9.11.3+dfsg-1ubuntu1.15 to 1:9.11.3+dfsg-1ubuntu1.16
  • Updated libisccc160 from version 1:9.11.3+dfsg-1ubuntu1.15 to 1:9.11.3+dfsg-1ubuntu1.16
  • Updated libisccfg160 from version 1:9.11.3+dfsg-1ubuntu1.15 to 1:9.11.3+dfsg-1ubuntu1.16
  • Updated liblwres160 from version 1:9.11.3+dfsg-1ubuntu1.15 to 1:9.11.3+dfsg-1ubuntu1.16
  • Updated libmysqlclient20 from version 5.7.35-0ubuntu0.18.04.2 to 5.7.36-0ubuntu0.18.04.1
  • Updated linux-libc-dev from version 4.15.0-159.167 to 4.15.0-161.169

Updates to packages available at build time only

  • Updated libmysqlclient-dev from version 5.7.35-0ubuntu0.18.04.2 to 5.7.36-0ubuntu0.18.04.1

Stack: heroku-20

  • Updated bind9-dnsutils from version 1:9.16.1-0ubuntu2.8 to 1:9.16.1-0ubuntu2.9
  • Updated bind9-host from version 1:9.16.1-0ubuntu2.8 to 1:9.16.1-0ubuntu2.9
  • Updated bind9-libs from version 1:9.16.1-0ubuntu2.8 to 1:9.16.1-0ubuntu2.9
  • Updated binutils from version 2.34-6ubuntu1.1 to 2.34-6ubuntu1.3
  • Updated binutils-common from version 2.34-6ubuntu1.1 to 2.34-6ubuntu1.3
  • Updated binutils-x86-64-linux-gnu from version 2.34-6ubuntu1.1 to 2.34-6ubuntu1.3
  • Updated distro-info-data from version 0.43ubuntu1.8 to 0.43ubuntu1.9
  • Updated dnsutils from version 1:9.16.1-0ubuntu2.8 to 1:9.16.1-0ubuntu2.9
  • Updated libbinutils from version 2.34-6ubuntu1.1 to 2.34-6ubuntu1.3
  • Updated libctf-nobfd0 from version 2.34-6ubuntu1.1 to 2.34-6ubuntu1.3
  • Updated libctf0 from version 2.34-6ubuntu1.1 to 2.34-6ubuntu1.3
  • Updated libmysqlclient21 from version 8.0.26-0ubuntu0.20.04.3 to 8.0.27-0ubuntu0.20.04.1
  • Updated linux-libc-dev from version 5.4.0-88.99 to 5.4.0-89.100

Updates to packages available at build time only

  • Updated libmysqlclient-dev from version 8.0.26-0ubuntu0.20.04.3 to 8.0.27-0ubuntu0.20.04.1