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

Change effective on 17 December 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.

The Heroku-16 stack is deprecated and will be end-of-life on May 1st, 2021. Please upgrade to a newer stack as soon as possible. See the Heroku-16 End-Of-Life FAQ for more details.

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 apt from version 1.2.32ubuntu0.1 to 1.2.32ubuntu0.2
  • Updated apt-transport-https from version 1.2.32ubuntu0.1 to 1.2.32ubuntu0.2
  • Updated apt-utils from version 1.2.32ubuntu0.1 to 1.2.32ubuntu0.2
  • Updated curl from version 7.47.0-1ubuntu2.16 to 7.47.0-1ubuntu2.18
  • Updated imagemagick from version 8:6.8.9.9-7ubuntu5.15 to 8:6.8.9.9-7ubuntu5.16
  • Updated imagemagick-6.q16 from version 8:6.8.9.9-7ubuntu5.15 to 8:6.8.9.9-7ubuntu5.16
  • Updated imagemagick-common from version 8:6.8.9.9-7ubuntu5.15 to 8:6.8.9.9-7ubuntu5.16
  • Updated libapt-inst2.0 from version 1.2.32ubuntu0.1 to 1.2.32ubuntu0.2
  • Updated libapt-pkg5.0 from version 1.2.32ubuntu0.1 to 1.2.32ubuntu0.2
  • Updated libcurl3 from version 7.47.0-1ubuntu2.16 to 7.47.0-1ubuntu2.18
  • Updated libcurl3-gnutls from version 7.47.0-1ubuntu2.16 to 7.47.0-1ubuntu2.18
  • Updated libmagickcore-6.q16-2 from version 8:6.8.9.9-7ubuntu5.15 to 8:6.8.9.9-7ubuntu5.16
  • Updated libmagickcore-6.q16-2-extra from version 8:6.8.9.9-7ubuntu5.15 to 8:6.8.9.9-7ubuntu5.16
  • Updated libmagickwand-6.q16-2 from version 8:6.8.9.9-7ubuntu5.15 to 8:6.8.9.9-7ubuntu5.16
  • Updated libssl1.0.0 from version 1.0.2g-1ubuntu4.17 to 1.0.2g-1ubuntu4.18
  • Updated openssl from version 1.0.2g-1ubuntu4.17 to 1.0.2g-1ubuntu4.18
  • Updated unzip from version 6.0-20ubuntu1 to 6.0-20ubuntu1.1

Updates to packages available at build time only

  • Updated libapt-pkg-dev from version 1.2.32ubuntu0.1 to 1.2.32ubuntu0.2
  • Updated libcurl4-openssl-dev from version 7.47.0-1ubuntu2.16 to 7.47.0-1ubuntu2.18
  • Updated libmagickcore-6-arch-config from version 8:6.8.9.9-7ubuntu5.15 to 8:6.8.9.9-7ubuntu5.16
  • Updated libmagickcore-6-headers from version 8:6.8.9.9-7ubuntu5.15 to 8:6.8.9.9-7ubuntu5.16
  • Updated libmagickcore-6.q16-dev from version 8:6.8.9.9-7ubuntu5.15 to 8:6.8.9.9-7ubuntu5.16
  • Updated libmagickwand-6-headers from version 8:6.8.9.9-7ubuntu5.15 to 8:6.8.9.9-7ubuntu5.16
  • Updated libmagickwand-6.q16-dev from version 8:6.8.9.9-7ubuntu5.15 to 8:6.8.9.9-7ubuntu5.16
  • Updated libmagickwand-dev from version 8:6.8.9.9-7ubuntu5.15 to 8:6.8.9.9-7ubuntu5.16
  • Updated libssl-dev from version 1.0.2g-1ubuntu4.17 to 1.0.2g-1ubuntu4.18
  • Updated libssl-doc from version 1.0.2g-1ubuntu4.17 to 1.0.2g-1ubuntu4.18

Stack: heroku-18

  • Updated apt from version 1.6.12ubuntu0.1 to 1.6.12ubuntu0.2
  • Updated apt-transport-https from version 1.6.12ubuntu0.1 to 1.6.12ubuntu0.2
  • Updated apt-utils from version 1.6.12ubuntu0.1 to 1.6.12ubuntu0.2
  • Updated curl from version 7.58.0-2ubuntu3.10 to 7.58.0-2ubuntu3.12
  • Updated imagemagick from version 8:6.9.7.4+dfsg-16ubuntu6.8 to 8:6.9.7.4+dfsg-16ubuntu6.9
  • Updated imagemagick-6-common from version 8:6.9.7.4+dfsg-16ubuntu6.8 to 8:6.9.7.4+dfsg-16ubuntu6.9
  • Updated imagemagick-6.q16 from version 8:6.9.7.4+dfsg-16ubuntu6.8 to 8:6.9.7.4+dfsg-16ubuntu6.9
  • Updated libapt-inst2.0 from version 1.6.12ubuntu0.1 to 1.6.12ubuntu0.2
  • Updated libapt-pkg5.0 from version 1.6.12ubuntu0.1 to 1.6.12ubuntu0.2
  • Updated libc-bin from version 2.27-3ubuntu1.3 to 2.27-3ubuntu1.4
  • Updated libc-dev-bin from version 2.27-3ubuntu1.3 to 2.27-3ubuntu1.4
  • Updated libc6 from version 2.27-3ubuntu1.3 to 2.27-3ubuntu1.4
  • Updated libc6-dev from version 2.27-3ubuntu1.3 to 2.27-3ubuntu1.4
  • Updated libcurl3-gnutls from version 7.58.0-2ubuntu3.10 to 7.58.0-2ubuntu3.12
  • Updated libcurl4 from version 7.58.0-2ubuntu3.10 to 7.58.0-2ubuntu3.12
  • Updated libmagickcore-6.q16-3 from version 8:6.9.7.4+dfsg-16ubuntu6.8 to 8:6.9.7.4+dfsg-16ubuntu6.9
  • Updated libmagickcore-6.q16-3-extra from version 8:6.9.7.4+dfsg-16ubuntu6.8 to 8:6.9.7.4+dfsg-16ubuntu6.9
  • Updated libmagickwand-6.q16-3 from version 8:6.9.7.4+dfsg-16ubuntu6.8 to 8:6.9.7.4+dfsg-16ubuntu6.9
  • Updated libssl1.0.0 from version 1.0.2n-1ubuntu5.4 to 1.0.2n-1ubuntu5.5
  • Updated libssl1.1 from version 1.1.1-1ubuntu2.1~18.04.6 to 1.1.1-1ubuntu2.1~18.04.7
  • Updated linux-libc-dev from version 4.15.0-126.129 to 4.15.0-128.131
  • Updated locales from version 2.27-3ubuntu1.3 to 2.27-3ubuntu1.4
  • Updated multiarch-support from version 2.27-3ubuntu1.3 to 2.27-3ubuntu1.4
  • Updated openssl from version 1.1.1-1ubuntu2.1~18.04.6 to 1.1.1-1ubuntu2.1~18.04.7
  • Updated unzip from version 6.0-21ubuntu1 to 6.0-21ubuntu1.1

Updates to packages available at build time only

  • Updated libapt-pkg-dev from version 1.6.12ubuntu0.1 to 1.6.12ubuntu0.2
  • Updated libc6-i386 from version 2.27-3ubuntu1.3 to 2.27-3ubuntu1.4
  • Updated libcurl4-openssl-dev from version 7.58.0-2ubuntu3.10 to 7.58.0-2ubuntu3.12
  • Updated libmagickcore-6-arch-config from version 8:6.9.7.4+dfsg-16ubuntu6.8 to 8:6.9.7.4+dfsg-16ubuntu6.9
  • Updated libmagickcore-6-headers from version 8:6.9.7.4+dfsg-16ubuntu6.8 to 8:6.9.7.4+dfsg-16ubuntu6.9
  • Updated libmagickcore-6.q16-dev from version 8:6.9.7.4+dfsg-16ubuntu6.8 to 8:6.9.7.4+dfsg-16ubuntu6.9
  • Updated libmagickwand-6-headers from version 8:6.9.7.4+dfsg-16ubuntu6.8 to 8:6.9.7.4+dfsg-16ubuntu6.9
  • Updated libmagickwand-6.q16-dev from version 8:6.9.7.4+dfsg-16ubuntu6.8 to 8:6.9.7.4+dfsg-16ubuntu6.9
  • Updated libmagickwand-dev from version 8:6.9.7.4+dfsg-16ubuntu6.8 to 8:6.9.7.4+dfsg-16ubuntu6.9
  • Updated libssl-dev from version 1.1.1-1ubuntu2.1~18.04.6 to 1.1.1-1ubuntu2.1~18.04.7

Stack: heroku-20

  • Updated apt from version 2.0.2ubuntu0.1 to 2.0.2ubuntu0.2
  • Updated apt-transport-https from version 2.0.2ubuntu0.1 to 2.0.2ubuntu0.2
  • Updated apt-utils from version 2.0.2ubuntu0.1 to 2.0.2ubuntu0.2
  • Updated curl from version 7.68.0-1ubuntu2.2 to 7.68.0-1ubuntu2.4
  • Updated imagemagick from version 8:6.9.10.23+dfsg-2.1ubuntu11.1 to 8:6.9.10.23+dfsg-2.1ubuntu11.2
  • Updated imagemagick-6-common from version 8:6.9.10.23+dfsg-2.1ubuntu11.1 to 8:6.9.10.23+dfsg-2.1ubuntu11.2
  • Updated imagemagick-6.q16 from version 8:6.9.10.23+dfsg-2.1ubuntu11.1 to 8:6.9.10.23+dfsg-2.1ubuntu11.2
  • Updated libapt-pkg6.0 from version 2.0.2ubuntu0.1 to 2.0.2ubuntu0.2
  • Updated libcurl3-gnutls from version 7.68.0-1ubuntu2.2 to 7.68.0-1ubuntu2.4
  • Updated libcurl4 from version 7.68.0-1ubuntu2.2 to 7.68.0-1ubuntu2.4
  • Updated libgdk-pixbuf2.0-0 from version 2.40.0+dfsg-3 to 2.40.0+dfsg-3ubuntu0.1
  • Updated libgdk-pixbuf2.0-common from version 2.40.0+dfsg-3 to 2.40.0+dfsg-3ubuntu0.1
  • Updated libmagickcore-6.q16-6 from version 8:6.9.10.23+dfsg-2.1ubuntu11.1 to 8:6.9.10.23+dfsg-2.1ubuntu11.2
  • Updated libmagickcore-6.q16-6-extra from version 8:6.9.10.23+dfsg-2.1ubuntu11.1 to 8:6.9.10.23+dfsg-2.1ubuntu11.2
  • Updated libmagickwand-6.q16-6 from version 8:6.9.10.23+dfsg-2.1ubuntu11.1 to 8:6.9.10.23+dfsg-2.1ubuntu11.2
  • Updated librsvg2-2 from version 2.48.7-1ubuntu0.20.04.1 to 2.48.9-1ubuntu0.20.04.1
  • Updated librsvg2-common from version 2.48.7-1ubuntu0.20.04.1 to 2.48.9-1ubuntu0.20.04.1
  • Updated libssl1.1 from version 1.1.1f-1ubuntu2 to 1.1.1f-1ubuntu2.1
  • Updated linux-libc-dev from version 5.4.0-56.62 to 5.4.0-58.64
  • Updated openssl from version 1.1.1f-1ubuntu2 to 1.1.1f-1ubuntu2.1

Updates to packages available at build time only

  • Updated gir1.2-gdkpixbuf-2.0 from version 2.40.0+dfsg-3 to 2.40.0+dfsg-3ubuntu0.1
  • Updated gir1.2-rsvg-2.0 from version 2.48.7-1ubuntu0.20.04.1 to 2.48.9-1ubuntu0.20.04.1
  • Updated libapt-pkg-dev from version 2.0.2ubuntu0.1 to 2.0.2ubuntu0.2
  • Updated libcurl4-openssl-dev from version 7.68.0-1ubuntu2.2 to 7.68.0-1ubuntu2.4
  • Updated libgdk-pixbuf2.0-bin from version 2.40.0+dfsg-3 to 2.40.0+dfsg-3ubuntu0.1
  • Updated libgdk-pixbuf2.0-dev from version 2.40.0+dfsg-3 to 2.40.0+dfsg-3ubuntu0.1
  • Updated libmagickcore-6-arch-config from version 8:6.9.10.23+dfsg-2.1ubuntu11.1 to 8:6.9.10.23+dfsg-2.1ubuntu11.2
  • Updated libmagickcore-6-headers from version 8:6.9.10.23+dfsg-2.1ubuntu11.1 to 8:6.9.10.23+dfsg-2.1ubuntu11.2
  • Updated libmagickcore-6.q16-dev from version 8:6.9.10.23+dfsg-2.1ubuntu11.1 to 8:6.9.10.23+dfsg-2.1ubuntu11.2
  • Updated libmagickwand-6-headers from version 8:6.9.10.23+dfsg-2.1ubuntu11.1 to 8:6.9.10.23+dfsg-2.1ubuntu11.2
  • Updated libmagickwand-6.q16-dev from version 8:6.9.10.23+dfsg-2.1ubuntu11.1 to 8:6.9.10.23+dfsg-2.1ubuntu11.2
  • Updated libmagickwand-dev from version 8:6.9.10.23+dfsg-2.1ubuntu11.1 to 8:6.9.10.23+dfsg-2.1ubuntu11.2
  • Updated librsvg2-dev from version 2.48.7-1ubuntu0.20.04.1 to 2.48.9-1ubuntu0.20.04.1
  • Updated libssl-dev from version 1.1.1f-1ubuntu2 to 1.1.1f-1ubuntu2.1