Ruby version >= X is incompatible with current version

Question

I have rbenv installed on my system and am trying to run the standard bundle install command within my ruby application now. I'm getting the following error though:

activesupport-5.0.1 requires ruby version >= 2.2.2, which is incompatible with the current version, ruby 1.9.3p484

I've checked everything on my end and am unsure where it's getting the old version of ruby 1.9.3... since I have 2.3.0 installed:

> rbenv versions
    system
  * 2.3.0 (set by /neo-main/.ruby-version)

> ruby --version
  ruby 2.3.0p0 (2015-12-25 revision 53290) [i686-linux]

> echo $PATH
  /root/.rbenv/shims:/root/.rbenv/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games

I've rebooted just to make sure there wasn't something stuck in memory or whatever too.

Answer 1

Check where your bundle command is coming from; it's probably outside rbenv. Do a gem install bundler and then rerun eval "$(rbenv init -)" to pick up the new shim.