Rails version configuration

Yes, there are two ways. Best is if you can freeze your own version
so your hosts can't kill you with unannounced upgrades. If that is
not an option in your particular configuration then you can comment
out the line in enviroment.rb. If you take option two be aware that
upgrades may break your app in odd ways, so you'll want to stay on top
of things as new versions come out.

Good Luck,