Can't update RubyGems

Question

I\'m having difficulties updating RubyGems from version 1.1.1 to newest. I\'ve tried the following:

gem update

Result:

Answer 1

Similar problem, different solution

$ sudo gem install rubygems-update update_rubygems
Updating metadata for 1 gems from gems.rubyforge.org/
.
complete
ERROR:  Error installing rubygems-update:
        rubygems-update requires builder (>= 0)
ERROR:  could not find update_rubygems locally or in a repository

and

$ sudo gem update --system
ERROR:  While executing gem ... (RuntimeError)
    gem update --system is disabled on Debian. RubyGems can be updated using the official Debian repositories by aptitude or apt-get.                      

My solution: Go to http://docs.rubygems.org/read/chapter/3#page13

and install manually, i.e. get the rubygems.... tgz and install it.

Hope it helps someone.