title: Your Ruby version is 2.6.0, but your Gemfile specified 2.5.0
body: <p>Having trouble doing bundle.
  My project is using 2.5.0 but every time i do <code>ruby -v</code> it gives me <code>ruby 2.6.0p0 (2018-12-25 revision 66547) [x86_64-darwin18]</code></p>
  
  <p>I am using rbenv and my <code>rbenv local</code> is <code>2.5.0</code> and <code>rbenv global</code> is <code>2.5.0</code></p>
  
  <p>Every time I do <code>Bundle</code> gives me an error <code>Your Ruby version is 2.6.0, but your Gemfile specified 2.5.0</code></p>
  
  <p>I have tried <code>gem install bundler</code> but it doesn't solves the problem.</p>
  
  <pre><code>source 'http://rubygems.org'
  
  ruby '2.5.0'
  gem 'rails', '5.0'
  </code></pre>
  
  <p>and my .ruby-version is also <code>2.5.0</code></p>