Ruby 1.8.5 on FC4

I have a VPS that runs FC4. Following the instructions at
results in ruby 1.8.4 being installed.

I have also tried compiling ruby from source, but ran into some
problems there.

Has anyone installed Ruby 1.8.5 on FC4? If so, did you do it with yum,
did you find a rpm somewhere else, or did you install from source?