Heroku-16, Heroku-18 and Heroku-20 Stack Images Updated

Change effective on 24 February 2021

We have updated the heroku-16, 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-16

• Updated bind9-host from version 1:9.10.3.dfsg.P4-8ubuntu1.17 to 1:9.10.3.dfsg.P4-8ubuntu1.18
• Updated dnsutils from version 1:9.10.3.dfsg.P4-8ubuntu1.17 to 1:9.10.3.dfsg.P4-8ubuntu1.18
• Updated libbind9-140 from version 1:9.10.3.dfsg.P4-8ubuntu1.17 to 1:9.10.3.dfsg.P4-8ubuntu1.18
• Updated libdns-export162 from version 1:9.10.3.dfsg.P4-8ubuntu1.17 to 1:9.10.3.dfsg.P4-8ubuntu1.18
• Updated libdns162 from version 1:9.10.3.dfsg.P4-8ubuntu1.17 to 1:9.10.3.dfsg.P4-8ubuntu1.18
• Updated libisc-export160 from version 1:9.10.3.dfsg.P4-8ubuntu1.17 to 1:9.10.3.dfsg.P4-8ubuntu1.18
• Updated libisc160 from version 1:9.10.3.dfsg.P4-8ubuntu1.17 to 1:9.10.3.dfsg.P4-8ubuntu1.18
• Updated libisccc140 from version 1:9.10.3.dfsg.P4-8ubuntu1.17 to 1:9.10.3.dfsg.P4-8ubuntu1.18
• Updated libisccfg140 from version 1:9.10.3.dfsg.P4-8ubuntu1.17 to 1:9.10.3.dfsg.P4-8ubuntu1.18
• Updated libldap-2.4-2 from version 2.4.42+dfsg-2ubuntu3.11 to 2.4.42+dfsg-2ubuntu3.13
• Updated liblwres141 from version 1:9.10.3.dfsg.P4-8ubuntu1.17 to 1:9.10.3.dfsg.P4-8ubuntu1.18
• Updated libpq5 from version 13.1-1.pgdg16.04+1 to 13.2-1.pgdg16.04+1
• Updated libssl1.0.0 from version 1.0.2g-1ubuntu4.18 to 1.0.2g-1ubuntu4.19
• Updated linux-libc-dev from version 4.4.0-201.233 to 4.4.0-203.235
• Updated openssl from version 1.0.2g-1ubuntu4.18 to 1.0.2g-1ubuntu4.19
• Updated postgresql-client-13 from version 13.1-1.pgdg16.04+1 to 13.2-1.pgdg16.04+1
• Updated postgresql-client-common from version 223.pgdg16.04+1 to 225.pgdg16.04+1

Updates to packages available at build time only

• Updated libldap2-dev from version 2.4.42+dfsg-2ubuntu3.11 to 2.4.42+dfsg-2ubuntu3.13
• Updated libpq-dev from version 13.1-1.pgdg16.04+1 to 13.2-1.pgdg16.04+1
• Updated libssl-dev from version 1.0.2g-1ubuntu4.18 to 1.0.2g-1ubuntu4.19
• Updated libssl-doc from version 1.0.2g-1ubuntu4.18 to 1.0.2g-1ubuntu4.19
• Updated postgresql-common from version 223.pgdg16.04+1 to 225.pgdg16.04+1
• Updated postgresql-server-dev-13 from version 13.1-1.pgdg16.04+1 to 13.2-1.pgdg16.04+1

Stack: heroku-18

• Updated bind9-host from version 1:9.11.3+dfsg-1ubuntu1.13 to 1:9.11.3+dfsg-1ubuntu1.14
• Updated dirmngr from version 2.2.4-1ubuntu1.3 to 2.2.4-1ubuntu1.4
• Updated dnsutils from version 1:9.11.3+dfsg-1ubuntu1.13 to 1:9.11.3+dfsg-1ubuntu1.14
• Updated gnupg from version 2.2.4-1ubuntu1.3 to 2.2.4-1ubuntu1.4
• Updated gnupg-l10n from version 2.2.4-1ubuntu1.3 to 2.2.4-1ubuntu1.4
• Updated gnupg-utils from version 2.2.4-1ubuntu1.3 to 2.2.4-1ubuntu1.4
• Updated gpg from version 2.2.4-1ubuntu1.3 to 2.2.4-1ubuntu1.4
• Updated gpg-agent from version 2.2.4-1ubuntu1.3 to 2.2.4-1ubuntu1.4
• Updated gpg-wks-client from version 2.2.4-1ubuntu1.3 to 2.2.4-1ubuntu1.4
• Updated gpg-wks-server from version 2.2.4-1ubuntu1.3 to 2.2.4-1ubuntu1.4
• Updated gpgconf from version 2.2.4-1ubuntu1.3 to 2.2.4-1ubuntu1.4
• Updated gpgsm from version 2.2.4-1ubuntu1.3 to 2.2.4-1ubuntu1.4
• Updated gpgv from version 2.2.4-1ubuntu1.3 to 2.2.4-1ubuntu1.4
• Updated libbind9-160 from version 1:9.11.3+dfsg-1ubuntu1.13 to 1:9.11.3+dfsg-1ubuntu1.14
• Updated libdns1100 from version 1:9.11.3+dfsg-1ubuntu1.13 to 1:9.11.3+dfsg-1ubuntu1.14
• Updated libirs160 from version 1:9.11.3+dfsg-1ubuntu1.13 to 1:9.11.3+dfsg-1ubuntu1.14
• Updated libisc169 from version 1:9.11.3+dfsg-1ubuntu1.13 to 1:9.11.3+dfsg-1ubuntu1.14
• Updated libisccc160 from version 1:9.11.3+dfsg-1ubuntu1.13 to 1:9.11.3+dfsg-1ubuntu1.14
• Updated libisccfg160 from version 1:9.11.3+dfsg-1ubuntu1.13 to 1:9.11.3+dfsg-1ubuntu1.14
• Updated libldap-2.4-2 from version 2.4.45+dfsg-1ubuntu1.8 to 2.4.45+dfsg-1ubuntu1.10
• Updated libldap-common from version 2.4.45+dfsg-1ubuntu1.8 to 2.4.45+dfsg-1ubuntu1.10
• Updated liblwres160 from version 1:9.11.3+dfsg-1ubuntu1.13 to 1:9.11.3+dfsg-1ubuntu1.14
• Updated libpq5 from version 13.1-1.pgdg18.04+1 to 13.2-1.pgdg18.04+1
• Updated libssl1.0.0 from version 1.0.2n-1ubuntu5.5 to 1.0.2n-1ubuntu5.6
• Updated libssl1.1 from version 1.1.1-1ubuntu2.1~18.04.7 to 1.1.1-1ubuntu2.1~18.04.8
• Updated linux-libc-dev from version 4.15.0-135.139 to 4.15.0-136.140
• Updated openssl from version 1.1.1-1ubuntu2.1~18.04.7 to 1.1.1-1ubuntu2.1~18.04.8
• Updated postgresql-client-13 from version 13.1-1.pgdg18.04+1 to 13.2-1.pgdg18.04+1
• Updated postgresql-client-common from version 223.pgdg18.04+1 to 225.pgdg18.04+1

Updates to packages available at build time only

• Updated libldap2-dev from version 2.4.45+dfsg-1ubuntu1.8 to 2.4.45+dfsg-1ubuntu1.10
• Updated libpq-dev from version 13.1-1.pgdg18.04+1 to 13.2-1.pgdg18.04+1
• Updated libssl-dev from version 1.1.1-1ubuntu2.1~18.04.7 to 1.1.1-1ubuntu2.1~18.04.8
• Updated postgresql-common from version 223.pgdg18.04+1 to 225.pgdg18.04+1
• Updated postgresql-server-dev-13 from version 13.1-1.pgdg18.04+1 to 13.2-1.pgdg18.04+1

Stack: heroku-20

• Updated bind9-dnsutils from version 1:9.16.1-0ubuntu2.4 to 1:9.16.1-0ubuntu2.6
• Updated bind9-host from version 1:9.16.1-0ubuntu2.4 to 1:9.16.1-0ubuntu2.6
• Updated bind9-libs from version 1:9.16.1-0ubuntu2.4 to 1:9.16.1-0ubuntu2.6
• Updated binutils from version 2.34-6ubuntu1 to 2.34-6ubuntu1.1
• Updated binutils-common from version 2.34-6ubuntu1 to 2.34-6ubuntu1.1
• Updated binutils-x86-64-linux-gnu from version 2.34-6ubuntu1 to 2.34-6ubuntu1.1
• Updated dirmngr from version 2.2.19-3ubuntu2 to 2.2.19-3ubuntu2.1
• Updated dnsutils from version 1:9.16.1-0ubuntu2.4 to 1:9.16.1-0ubuntu2.6
• Updated gnupg from version 2.2.19-3ubuntu2 to 2.2.19-3ubuntu2.1
• Updated gnupg-l10n from version 2.2.19-3ubuntu2 to 2.2.19-3ubuntu2.1
• Updated gnupg-utils from version 2.2.19-3ubuntu2 to 2.2.19-3ubuntu2.1
• Updated gpg from version 2.2.19-3ubuntu2 to 2.2.19-3ubuntu2.1
• Updated gpg-agent from version 2.2.19-3ubuntu2 to 2.2.19-3ubuntu2.1
• Updated gpg-wks-client from version 2.2.19-3ubuntu2 to 2.2.19-3ubuntu2.1
• Updated gpg-wks-server from version 2.2.19-3ubuntu2 to 2.2.19-3ubuntu2.1
• Updated gpgconf from version 2.2.19-3ubuntu2 to 2.2.19-3ubuntu2.1
• Updated gpgsm from version 2.2.19-3ubuntu2 to 2.2.19-3ubuntu2.1
• Updated gpgv from version 2.2.19-3ubuntu2 to 2.2.19-3ubuntu2.1
• Updated libbinutils from version 2.34-6ubuntu1 to 2.34-6ubuntu1.1
• Updated libctf-nobfd0 from version 2.34-6ubuntu1 to 2.34-6ubuntu1.1
• Updated libctf0 from version 2.34-6ubuntu1 to 2.34-6ubuntu1.1
• Updated libgdk-pixbuf2.0-0 from version 2.40.0+dfsg-3ubuntu0.1 to 2.40.0+dfsg-3ubuntu0.2
• Updated libgdk-pixbuf2.0-common from version 2.40.0+dfsg-3ubuntu0.1 to 2.40.0+dfsg-3ubuntu0.2
• Updated libldap-2.4-2 from version 2.4.49+dfsg-2ubuntu1.5 to 2.4.49+dfsg-2ubuntu1.7
• Updated libldap-common from version 2.4.49+dfsg-2ubuntu1.5 to 2.4.49+dfsg-2ubuntu1.7
• Updated libpq5 from version 13.1-1.pgdg20.04+1 to 13.2-1.pgdg20.04+1
• Updated libssl1.1 from version 1.1.1f-1ubuntu2.1 to 1.1.1f-1ubuntu2.2
• Updated linux-libc-dev from version 5.4.0-65.73 to 5.4.0-66.74
• Updated openssl from version 1.1.1f-1ubuntu2.1 to 1.1.1f-1ubuntu2.2
• Updated postgresql-client-13 from version 13.1-1.pgdg20.04+1 to 13.2-1.pgdg20.04+1
• Updated postgresql-client-common from version 223.pgdg20.04+1 to 225.pgdg20.04+1

Updates to packages available at build time only

• Updated gir1.2-gdkpixbuf-2.0 from version 2.40.0+dfsg-3ubuntu0.1 to 2.40.0+dfsg-3ubuntu0.2
• Updated libgdk-pixbuf2.0-bin from version 2.40.0+dfsg-3ubuntu0.1 to 2.40.0+dfsg-3ubuntu0.2
• Updated libgdk-pixbuf2.0-dev from version 2.40.0+dfsg-3ubuntu0.1 to 2.40.0+dfsg-3ubuntu0.2
• Updated libldap2-dev from version 2.4.49+dfsg-2ubuntu1.5 to 2.4.49+dfsg-2ubuntu1.7
• Updated libpq-dev from version 13.1-1.pgdg20.04+1 to 13.2-1.pgdg20.04+1
• Updated libssl-dev from version 1.1.1f-1ubuntu2.1 to 1.1.1f-1ubuntu2.2
• Updated postgresql-common from version 223.pgdg20.04+1 to 225.pgdg20.04+1
• Updated postgresql-server-dev-13 from version 13.1-1.pgdg20.04+1 to 13.2-1.pgdg20.04+1