How to upgrade rails app from 2.3.5 to 2.3.9

Question

At the top of environment.rb I could change from 2.3.5 to 2.3.9. Is there anything else I need to do?

Answer 1

no, you just avoid warning after upgrading

Answer 2

2.3.9 is a "bridge" to Rails 3. After installing the Rails 2.3.9 gem and updating your environment.rb, run your application to see if you get any deprecation warnings. If you fix those, you'll be readier for Rails 3.