Change effective on 01 May 2019
In accordance with Heroku’s stack update policy, the Cedar-14 stack was previously deprecated on 3 May 2018, and the end-of-life (EOL) window has begun as of 1 May 2019. Apps running on the Cedar-14 stack will continue to run, but you should upgrade your apps to a more recent stack as soon as possible.
For one year, apps running on the Cedar-14 stack will continue to build, and Heroku will continue to apply critical security updates to the stack.
To get a list of your apps that use the Cedar-14 stack, run the following two commands:
$ heroku plugins:install apps-table $ heroku apps:table --filter="STACK=cedar-14"
You can also show apps by team:
$ heroku apps:table --team=my-team --filter="STACK=cedar-14"
See the Cedar-14 End-of-Life FAQ for more information.