So I just got my new Heroku Cedar Stack set up with a custom URL, and surpassingly it was a bit more confusing than I thought ( on the Namecheap side).

Below are the steps I used to configure my custom domain, with my Heroku instance.

From the console run this heroku toolbelt command:
$ heroku domains:add

Then in Namecheap, log into your admin and select your domain:

  • Navigate to All Host Records
  • Then for the www host name, enter
    • (KEY: must end with a .) with a CNAME record type.

You will then be good to go.