I migrated my Heroku apps to the cedar-14 stack.

• Migrating to the Celadon Cedar-14 Stack | Heroku Dev Center

Change to cedar-14 stack

$ heroku stack:set cedar-14 -a your-app-name
Stack set. Next release on your-app-name will use cedar-14.
Run `git push heroku master` to create a new release on cedar-14.

Empty commit for git push

$ git commit --allow-empty -m "Upgrading to Cedar-14"
[master a9ae9cb] Upgrading to Cedar-14

Deploy to Heroku

$ git push heroku master 

Check stack

$ heroku stack
=== your-app-name Available Stacks
* cedar-14

I was impressed that “Heroku is wonderful for allowing easy migration.”

That’s all from the Gemba.