I’m trying to uninstall Rails completely, but I can’t get the grip of it.

Here’s what I tried:

$ gem update
rails 4.0.0.beta1 installed

$ rails -v
Rails 4.0.0.beta1

$ gem uninstall rails -v 4.0.0.beta1

BUT STILL:

$ rails -v
Rails 4.0.0.beta1

How I can completely remove rails version ?

ruby-on-rails
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