How to set environment variables containing "!" in Heroku?

Question

I've been stuck on this for ages and I can't find a solution. I've set up environment variables in the ~/.zshrc file and exported them correctly.

Now when I try these commands for heroku setup it works for the email address but when I enter it for the password it removes the ! at the end of my password.

input:

heroku config:set EMAIL_HOST_USER="[email protected]"
heroku config:set EMAIL_HOST_PASSWORD="mypassword!"

output:

Setting EMAIL_HOST_PASSWORD and restarting ⬢ <app-name>... done, v45
EMAIL_HOST_PASSWORD: mypassword

Can anyone explain why this may be happening?

I have also tried,

heroku config:add

but the exclamation mark is also removed.

Answer 1

I discovered you can edit your Heroku config variables in your settings of your project. https://dashboard.heroku.com/

I would still like to know how come the '!' would not save if anyone stumbles across this post and knows the answer :)