If you need to update any gem in your system and you get some strange error message like the one below, maybe all you need to do is upgrade your RubyGems component.
ERROR: While executing gem ... (Gem::RemoteSourceException)
HTTP Response 403
I got the above error message when running the following command:
gem update --system
Another symptom that you need to upgrade your RubyGem is if you notice that the system responds different versions for your components:.
For instance, if you get this...