title: Mac Ruby stuck on 2.6.3p62
body: <p>I am trying to update ruby to 2.7.1 on my mac, but every time I do rbenv global 2.7.1; ruby -v always shows 2.6.3.</p>
  <p>I even checked with rbenv global and it returned 2.7.1.</p>
  <p>Installed ruby via homebrew.</p>