Freezing after Upgrade?

I’m upgrading our production server from 1.1.2 to 1.1.5. The
instructions say:


As always, the trick is to do â??gem install railsâ? and then either
changing config/environment.rb, if youâ??re bound to gems, or do â??rake
rails:freeze:gemsâ? if youâ??re freezing gems in vendor.

I’ve done the “gem install rails” already and it’s been updated but do I
need to freeze the gems or anything? Is any modification needed in the
project directory itself to make sure we’re safe and secure?