The heroku command exists in these Ruby versions?

Question

After I updated my Ruby version with rbenv I wasn't able to use the Heroku command-line tool. I got this error:

> heroku
rbenv: heroku: command not found

The `heroku' command exists in these Ruby versions:
  2.0.0-p195

Reinstalling the tool belt from toolbelt.heroku.com didn't help.

Answer 1

I switched to my previous Ruby version 2.0.0p195 and uninstalled the gem 'heroku'

rbenv global 2.0.0p195

gem uninstall heroku

Then I switched to the latest Ruby version 2.0.0p353 and reinstalled Toolbelt toolbelt.heroku.com

rbenv global 2.0.0p353

Answer 2

If you're using rbenv, here are the steps I follow to fix this.

The error

rbenv: heroku: command not found

The `heroku' command exists in these Ruby versions:
  2.2.2

What to do

1. rbenv local 2.2.2
2. gem uninstall heroku
3. rbenv rehash

Good to go!

Answer 3

Heroku does not recommend using heroku gem from the recent times. If you have already installed the gem, uninstall the gem first with:

$ gem uninstall heroku

then install the toolbelt from Heroku as specified on Heroku site:

For ubuntu/debian:

$ wget -qO- https://toolbelt.heroku.com/install-ubuntu.sh | sh

For other linux:

$ wget -qO- https://toolbelt.heroku.com/install.sh | sh

For Windows/MacOS see instructions on links.