Heroku-18 and Heroku-20 Stack Images Updated

Change effective on 23 June 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 imagemagick from version 8:6.9.7.4+dfsg-16ubuntu6.9 to 8:6.9.7.4+dfsg-16ubuntu6.11
• Updated imagemagick-6-common from version 8:6.9.7.4+dfsg-16ubuntu6.9 to 8:6.9.7.4+dfsg-16ubuntu6.11
• Updated imagemagick-6.q16 from version 8:6.9.7.4+dfsg-16ubuntu6.9 to 8:6.9.7.4+dfsg-16ubuntu6.11
• Updated libhogweed4 from version 3.4-1ubuntu0.1 to 3.4.1-0ubuntu0.18.04.1
• Updated libmagickcore-6.q16-3 from version 8:6.9.7.4+dfsg-16ubuntu6.9 to 8:6.9.7.4+dfsg-16ubuntu6.11
• Updated libmagickcore-6.q16-3-extra from version 8:6.9.7.4+dfsg-16ubuntu6.9 to 8:6.9.7.4+dfsg-16ubuntu6.11
• Updated libmagickwand-6.q16-3 from version 8:6.9.7.4+dfsg-16ubuntu6.9 to 8:6.9.7.4+dfsg-16ubuntu6.11
• Updated libnettle6 from version 3.4-1ubuntu0.1 to 3.4.1-0ubuntu0.18.04.1
• Updated libopenexr22 from version 2.2.0-11.1ubuntu1.6 to 2.2.0-11.1ubuntu1.7
• Updated libsystemd0 from version 237-3ubuntu10.47 to 237-3ubuntu10.48
• Updated libudev1 from version 237-3ubuntu10.47 to 237-3ubuntu10.48
• Updated libxml2 from version 2.9.4+dfsg1-6.1ubuntu1.3 to 2.9.4+dfsg1-6.1ubuntu1.4
• Updated linux-libc-dev from version 4.15.0-144.148 to 4.15.0-147.151

Updates to packages available at build time only

• Updated libmagickcore-6-arch-config from version 8:6.9.7.4+dfsg-16ubuntu6.9 to 8:6.9.7.4+dfsg-16ubuntu6.11
• Updated libmagickcore-6-headers from version 8:6.9.7.4+dfsg-16ubuntu6.9 to 8:6.9.7.4+dfsg-16ubuntu6.11
• Updated libmagickcore-6.q16-dev from version 8:6.9.7.4+dfsg-16ubuntu6.9 to 8:6.9.7.4+dfsg-16ubuntu6.11
• Updated libmagickwand-6-headers from version 8:6.9.7.4+dfsg-16ubuntu6.9 to 8:6.9.7.4+dfsg-16ubuntu6.11
• Updated libmagickwand-6.q16-dev from version 8:6.9.7.4+dfsg-16ubuntu6.9 to 8:6.9.7.4+dfsg-16ubuntu6.11
• Updated libmagickwand-dev from version 8:6.9.7.4+dfsg-16ubuntu6.9 to 8:6.9.7.4+dfsg-16ubuntu6.11
• Updated libopenexr-dev from version 2.2.0-11.1ubuntu1.6 to 2.2.0-11.1ubuntu1.7
• Updated libsystemd-dev from version 237-3ubuntu10.47 to 237-3ubuntu10.48
• Updated libudev-dev from version 237-3ubuntu10.47 to 237-3ubuntu10.48
• Updated libxml2-dev from version 2.9.4+dfsg1-6.1ubuntu1.3 to 2.9.4+dfsg1-6.1ubuntu1.4
• Updated nettle-dev from version 3.4-1ubuntu0.1 to 3.4.1-0ubuntu0.18.04.1

Stack: heroku-20

• Updated gcc-10-base from version 10.2.0-5ubuntu1~20.04 to 10.3.0-1ubuntu1~20.04
• Updated imagemagick from version 8:6.9.10.23+dfsg-2.1ubuntu11.2 to 8:6.9.10.23+dfsg-2.1ubuntu11.4
• Updated imagemagick-6-common from version 8:6.9.10.23+dfsg-2.1ubuntu11.2 to 8:6.9.10.23+dfsg-2.1ubuntu11.4
• Updated imagemagick-6.q16 from version 8:6.9.10.23+dfsg-2.1ubuntu11.2 to 8:6.9.10.23+dfsg-2.1ubuntu11.4
• Updated libatomic1 from version 10.2.0-5ubuntu1~20.04 to 10.3.0-1ubuntu1~20.04
• Updated libcc1-0 from version 10.2.0-5ubuntu1~20.04 to 10.3.0-1ubuntu1~20.04
• Updated libgcc-s1 from version 10.2.0-5ubuntu1~20.04 to 10.3.0-1ubuntu1~20.04
• Updated libgomp1 from version 10.2.0-5ubuntu1~20.04 to 10.3.0-1ubuntu1~20.04
• Updated libhogweed5 from version 3.5.1+really3.5.1-2ubuntu0.1 to 3.5.1+really3.5.1-2ubuntu0.2
• Updated libitm1 from version 10.2.0-5ubuntu1~20.04 to 10.3.0-1ubuntu1~20.04
• Updated liblsan0 from version 10.2.0-5ubuntu1~20.04 to 10.3.0-1ubuntu1~20.04
• Updated libmagickcore-6.q16-6 from version 8:6.9.10.23+dfsg-2.1ubuntu11.2 to 8:6.9.10.23+dfsg-2.1ubuntu11.4
• Updated libmagickcore-6.q16-6-extra from version 8:6.9.10.23+dfsg-2.1ubuntu11.2 to 8:6.9.10.23+dfsg-2.1ubuntu11.4
• Updated libmagickwand-6.q16-6 from version 8:6.9.10.23+dfsg-2.1ubuntu11.2 to 8:6.9.10.23+dfsg-2.1ubuntu11.4
• Updated libnettle7 from version 3.5.1+really3.5.1-2ubuntu0.1 to 3.5.1+really3.5.1-2ubuntu0.2
• Updated libprocps8 from version 2:3.3.16-1ubuntu2.1 to 2:3.3.16-1ubuntu2.2
• Updated libquadmath0 from version 10.2.0-5ubuntu1~20.04 to 10.3.0-1ubuntu1~20.04
• Updated libstdc++6 from version 10.2.0-5ubuntu1~20.04 to 10.3.0-1ubuntu1~20.04
• Updated libsystemd0 from version 245.4-4ubuntu3.6 to 245.4-4ubuntu3.7
• Updated libtsan0 from version 10.2.0-5ubuntu1~20.04 to 10.3.0-1ubuntu1~20.04
• Updated libubsan1 from version 10.2.0-5ubuntu1~20.04 to 10.3.0-1ubuntu1~20.04
• Updated libudev1 from version 245.4-4ubuntu3.6 to 245.4-4ubuntu3.7
• Updated libxml2 from version 2.9.10+dfsg-5 to 2.9.10+dfsg-5ubuntu0.20.04.1
• Updated linux-libc-dev from version 5.4.0-74.83 to 5.4.0-77.86
• Updated procps from version 2:3.3.16-1ubuntu2.1 to 2:3.3.16-1ubuntu2.2

Updates to packages available at build time only

• Updated lib32gcc-s1 from version 10.2.0-5ubuntu1~20.04 to 10.3.0-1ubuntu1~20.04
• Updated lib32stdc++6 from version 10.2.0-5ubuntu1~20.04 to 10.3.0-1ubuntu1~20.04
• Updated libmagickcore-6-arch-config from version 8:6.9.10.23+dfsg-2.1ubuntu11.2 to 8:6.9.10.23+dfsg-2.1ubuntu11.4
• Updated libmagickcore-6-headers from version 8:6.9.10.23+dfsg-2.1ubuntu11.2 to 8:6.9.10.23+dfsg-2.1ubuntu11.4
• Updated libmagickcore-6.q16-dev from version 8:6.9.10.23+dfsg-2.1ubuntu11.2 to 8:6.9.10.23+dfsg-2.1ubuntu11.4
• Updated libmagickwand-6-headers from version 8:6.9.10.23+dfsg-2.1ubuntu11.2 to 8:6.9.10.23+dfsg-2.1ubuntu11.4
• Updated libmagickwand-6.q16-dev from version 8:6.9.10.23+dfsg-2.1ubuntu11.2 to 8:6.9.10.23+dfsg-2.1ubuntu11.4
• Updated libmagickwand-dev from version 8:6.9.10.23+dfsg-2.1ubuntu11.2 to 8:6.9.10.23+dfsg-2.1ubuntu11.4
• Updated libobjc4 from version 10.2.0-5ubuntu1~20.04 to 10.3.0-1ubuntu1~20.04
• Updated libsystemd-dev from version 245.4-4ubuntu3.6 to 245.4-4ubuntu3.7
• Updated libudev-dev from version 245.4-4ubuntu3.6 to 245.4-4ubuntu3.7
• Updated libxml2-dev from version 2.9.10+dfsg-5 to 2.9.10+dfsg-5ubuntu0.20.04.1
• Updated nettle-dev from version 3.5.1+really3.5.1-2ubuntu0.1 to 3.5.1+really3.5.1-2ubuntu0.2