Change gem in bundler

I'm trying to get started with Rails 3 after a reinstall of my
development environment. So far bundler is in my way. This is my
problem. I have i18n version 0.5 installed. In my Rails app Gemfile.lock
it states version 0.4. How do I change that to 0.5?

Paul Bergstrom wrote in post #967762:

I'm trying to get started with Rails 3 after a reinstall of my
development environment. So far bundler is in my way. This is my
problem. I have i18n version 0.5 installed. In my Rails app Gemfile.lock
it states version 0.4. How do I change that to 0.5?

What does your Gemfile (not .lock) say for that gem?

Best,

I fixed i18n.

Now I have a problem with mysql2 and Library not loaded. I guess I have
to reinstall that gem with the right path. After that I might be back on
track.