Topic: Deploy or rewrite?

I've been developing a project in rails 2.3.11 and ruby 1.8.7. Now, i'm looking for a decent low-priced host (the site will be low-traffic). Are there any good ones that still offer 2.3.11? Should i better rewrite the app to 3.2? I'm a bit scared that by the time i have rewritten it, another new rails version will be out.