Heroku Custom Domain: sni_endpoint?

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When adding a custom domain to my Heroku app I ran into the error below. Turns out Heroku has added a new requirement: Beginning November 1, 2021, this new parameter will be required: sni_endpoint

heroku domains:add www.mywebsite.com 
Adding www.mywebsite.com to ⬢ mywebiste... done

     ›   Error: Require params: sni_endpoint.
     ›   Error ID: invalid_params

Can someone tell me the new syntax to use instead of heroku domains:add www.mywebsite.com

2 Answers

I just tried on my end after running a heroku update command and it enqueued the new domain correctly.

I guess your Heroku CLI toolbelt is out of date and not sending the newly required sni_endpoint to their API. After all, it's just a CLI wrapper for their API.

I don't know how to do it from the CLI, but in the meantime you can log in to the dashboard, go to Settings, then scroll down to Domains and add it there. I just did it that way and it works.

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