[CentOS] gem install reel on Centos 7

Mon Aug 5 01:20:42 UTC 2019
Jerry Geis <jerry.geis at gmail.com>

Hi - I installed ruby for something...
The instructions said to also do the comand:

gem install reel
ERROR:  Error installing reel:
        timers requires Ruby version >= 2.2.1.
[root at devgeis ~]# ruby --version
ruby 2.0.0p648 (2015-12-16) [x86_64-linux]

Not sure what to do. Wait for Centos 8? Thoughts? Thanks,