Redmine

Hi guys,
I am starting an Agile Process in a company, and we've chosen Redmine to be the tool that will run the process... we have to choose a version, and because of some existent Agile Plugins we might go with the Redmine 2.6 branch. I've seen in RedmineInstall page that Rails version to run Redmine 2.6 is the 3.2.

Well... does anybody know if is it posible to run Redmine 2.6 with Rails 4.2 ? I am trying that and there were no errors until now... but i am worried about not following the official recommendations...

Thanks in advance!