ruby on rails - bundle install fails with SSL certificate verification error

Question

When I run bundle install for my Rails 3 project on Centos 5.5 it fails with an error:

Gem::RemoteFetcher::FetchError: SSL_connect returned=1 errno=0 state=SSLv3 
read server certificate B: certificate verify failed 
(https://bb-m.rubygems.org/gems/multi_json-1.3.2.gem)
An error occured while installing multi_json (1.3.2), and Bundler cannot continue.
Make sure that `gem install multi_json -v '1.3.2'` succeeds before bundling.

When I try to install the gem manually (by gem install multi_json -v '1.3.2') it works. The same problem occurs with several other gems. I use RVM (1.12.3), ruby 1.9.2, bundler 1.1.3.

How to fix it?

Answer 1

Update

Now that I've karma wh..err mined enough from this answer everyone should know that this should have been fixed.

re: via Ownatik again bundle install fails with SSL certificate verification error

gem update --system

My answer is still correct and left below for reference if that ends up not working for you.

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Honestly the best temporary solution is to

[...] use the non-ssl version of rubygems in your gemfile as a temporary workaround.

via user Ownatik

what they mean is at the top of the Gemfile in your rails application directory change

source 'https://rubygems.org'

to

source 'http://rubygems.org'

note that the second version is http instead of https