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

Change effective on 19 November 2020

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 krb5-locales from version 1.13.2+dfsg-5ubuntu2.1 to 1.13.2+dfsg-5ubuntu2.2
• Updated libexif12 from version 0.6.21-2ubuntu0.5 to 0.6.21-2ubuntu0.6
• Updated libgssapi-krb5-2 from version 1.13.2+dfsg-5ubuntu2.1 to 1.13.2+dfsg-5ubuntu2.2
• Updated libk5crypto3 from version 1.13.2+dfsg-5ubuntu2.1 to 1.13.2+dfsg-5ubuntu2.2
• Updated libkrb5-3 from version 1.13.2+dfsg-5ubuntu2.1 to 1.13.2+dfsg-5ubuntu2.2
• Updated libkrb5support0 from version 1.13.2+dfsg-5ubuntu2.1 to 1.13.2+dfsg-5ubuntu2.2
• Updated libldap-2.4-2 from version 2.4.42+dfsg-2ubuntu3.10 to 2.4.42+dfsg-2ubuntu3.11
• Updated libpq5 from version 13.0-1.pgdg16.04+1 to 13.1-1.pgdg16.04+1
• Updated linux-libc-dev from version 4.4.0-193.224 to 4.4.0-194.226
• Updated postgresql-client-12 from version 12.4-1.pgdg16.04+1 to 12.5-1.pgdg16.04+1
• Updated postgresql-client-common from version 220.pgdg16.04+1 to 223.pgdg16.04+1

Updates to packages available at build time only

• Updated krb5-multidev from version 1.13.2+dfsg-5ubuntu2.1 to 1.13.2+dfsg-5ubuntu2.2
• Updated libexif-dev from version 0.6.21-2ubuntu0.5 to 0.6.21-2ubuntu0.6
• Updated libgssrpc4 from version 1.13.2+dfsg-5ubuntu2.1 to 1.13.2+dfsg-5ubuntu2.2
• Updated libkadm5clnt-mit9 from version 1.13.2+dfsg-5ubuntu2.1 to 1.13.2+dfsg-5ubuntu2.2
• Updated libkadm5srv-mit9 from version 1.13.2+dfsg-5ubuntu2.1 to 1.13.2+dfsg-5ubuntu2.2
• Updated libkdb5-8 from version 1.13.2+dfsg-5ubuntu2.1 to 1.13.2+dfsg-5ubuntu2.2
• Updated libkrb5-dev from version 1.13.2+dfsg-5ubuntu2.1 to 1.13.2+dfsg-5ubuntu2.2
• Updated libldap2-dev from version 2.4.42+dfsg-2ubuntu3.10 to 2.4.42+dfsg-2ubuntu3.11
• Updated libpq-dev from version 13.0-1.pgdg16.04+1 to 13.1-1.pgdg16.04+1
• Updated postgresql-common from version 220.pgdg16.04+1 to 223.pgdg16.04+1
• Updated postgresql-server-dev-12 from version 12.4-1.pgdg16.04+1 to 12.5-1.pgdg16.04+1

Stack: heroku-18

• Updated libexif12 from version 0.6.21-4ubuntu0.5 to 0.6.21-4ubuntu0.6
• Updated libgssapi-krb5-2 from version 1.16-2ubuntu0.1 to 1.16-2ubuntu0.2
• Updated libk5crypto3 from version 1.16-2ubuntu0.1 to 1.16-2ubuntu0.2
• Updated libkrb5-3 from version 1.16-2ubuntu0.1 to 1.16-2ubuntu0.2
• Updated libkrb5support0 from version 1.16-2ubuntu0.1 to 1.16-2ubuntu0.2
• Updated libldap-2.4-2 from version 2.4.45+dfsg-1ubuntu1.7 to 2.4.45+dfsg-1ubuntu1.8
• Updated libldap-common from version 2.4.45+dfsg-1ubuntu1.7 to 2.4.45+dfsg-1ubuntu1.8
• Updated libpq5 from version 13.0-1.pgdg18.04+1 to 13.1-1.pgdg18.04+1
• Updated libsystemd0 from version 237-3ubuntu10.42 to 237-3ubuntu10.43
• Updated libudev1 from version 237-3ubuntu10.42 to 237-3ubuntu10.43
• Updated linux-libc-dev from version 4.15.0-122.124 to 4.15.0-124.127
• Updated postgresql-client-12 from version 12.4-1.pgdg18.04+1 to 12.5-1.pgdg18.04+1
• Updated postgresql-client-common from version 220.pgdg18.04+1 to 223.pgdg18.04+1

Updates to packages available at build time only

• Updated krb5-multidev from version 1.16-2ubuntu0.1 to 1.16-2ubuntu0.2
• Updated libexif-dev from version 0.6.21-4ubuntu0.5 to 0.6.21-4ubuntu0.6
• Updated libgssrpc4 from version 1.16-2ubuntu0.1 to 1.16-2ubuntu0.2
• Updated libkadm5clnt-mit11 from version 1.16-2ubuntu0.1 to 1.16-2ubuntu0.2
• Updated libkadm5srv-mit11 from version 1.16-2ubuntu0.1 to 1.16-2ubuntu0.2
• Updated libkdb5-9 from version 1.16-2ubuntu0.1 to 1.16-2ubuntu0.2
• Updated libkrb5-dev from version 1.16-2ubuntu0.1 to 1.16-2ubuntu0.2
• Updated libldap2-dev from version 2.4.45+dfsg-1ubuntu1.7 to 2.4.45+dfsg-1ubuntu1.8
• Updated libpq-dev from version 13.0-1.pgdg18.04+1 to 13.1-1.pgdg18.04+1
• Updated libsystemd-dev from version 237-3ubuntu10.42 to 237-3ubuntu10.43
• Updated libudev-dev from version 237-3ubuntu10.42 to 237-3ubuntu10.43
• Updated postgresql-common from version 220.pgdg18.04+1 to 223.pgdg18.04+1
• Updated postgresql-server-dev-12 from version 12.4-1.pgdg18.04+1 to 12.5-1.pgdg18.04+1

Stack: heroku-20

• Updated libexif12 from version 0.6.21-6ubuntu0.3 to 0.6.21-6ubuntu0.4
• Updated libgssapi-krb5-2 from version 1.17-6ubuntu4 to 1.17-6ubuntu4.1
• Updated libk5crypto3 from version 1.17-6ubuntu4 to 1.17-6ubuntu4.1
• Updated libkrb5-3 from version 1.17-6ubuntu4 to 1.17-6ubuntu4.1
• Updated libkrb5support0 from version 1.17-6ubuntu4 to 1.17-6ubuntu4.1
• Updated libldap-2.4-2 from version 2.4.49+dfsg-2ubuntu1.4 to 2.4.49+dfsg-2ubuntu1.5
• Updated libldap-common from version 2.4.49+dfsg-2ubuntu1.4 to 2.4.49+dfsg-2ubuntu1.5
• Updated libmaxminddb0 from version 1.4.2-0ubuntu1 to 1.4.2-0ubuntu1.20.04.1
• Updated libpq5 from version 13.0-1.pgdg20.04+1 to 13.1-1.pgdg20.04+1
• Updated linux-libc-dev from version 5.4.0-52.57 to 5.4.0-54.60
• Updated postgresql-client-12 from version 12.4-1.pgdg20.04+1 to 12.5-1.pgdg20.04+1
• Updated postgresql-client-common from version 220.pgdg20.04+1 to 223.pgdg20.04+1

Updates to packages available at build time only

• Updated krb5-multidev from version 1.17-6ubuntu4 to 1.17-6ubuntu4.1
• Updated libexif-dev from version 0.6.21-6ubuntu0.3 to 0.6.21-6ubuntu0.4
• Updated libgssrpc4 from version 1.17-6ubuntu4 to 1.17-6ubuntu4.1
• Updated libkadm5clnt-mit11 from version 1.17-6ubuntu4 to 1.17-6ubuntu4.1
• Updated libkadm5srv-mit11 from version 1.17-6ubuntu4 to 1.17-6ubuntu4.1
• Updated libkdb5-9 from version 1.17-6ubuntu4 to 1.17-6ubuntu4.1
• Updated libkrb5-dev from version 1.17-6ubuntu4 to 1.17-6ubuntu4.1
• Updated libldap2-dev from version 2.4.49+dfsg-2ubuntu1.4 to 2.4.49+dfsg-2ubuntu1.5
• Updated libpq-dev from version 13.0-1.pgdg20.04+1 to 13.1-1.pgdg20.04+1
• Updated postgresql-common from version 220.pgdg20.04+1 to 223.pgdg20.04+1
• Updated postgresql-server-dev-12 from version 12.4-1.pgdg20.04+1 to 12.5-1.pgdg20.04+1