title: Does FileUtils require an unavailable Ruby version?
body: <p>I am building my first Rails application and want to include FileUtils in order to manage my Google sheets API (I got it to work in a standalone script).</p>
  
  <p>However when I add FileUtils to my gemfile and use <code>bundle install</code> I get the following error:</p>
  
  <blockquote>
    <p>ERROR:  Error installing fileutils:
           fileutils requires Ruby version >= 2.5.0dev.</p>
  </blockquote>
  
  <p>And the most stable version of Ruby is 2.4.1.</p>
  
  <p>So what am I missing? </p>