title: How to install activerecord-sqlserver-adapter (~> 4.0.0)?
body: <p>I have a Rails 4 project and use <code>activerecord-sqlserver-adapter</code>. The <a href="https://github.com/rails-sqlserver/activerecord-sqlserver-adapter#installation" rel="nofollow">readme installation</a> suggests:</p>
  
  <pre><code>gem 'tiny_tds'
  gem 'activerecord-sqlserver-adapter', '~&gt; 4.0.0'
  </code></pre>
  
  <p>However, <code>bundle install</code> returns:</p>
  
  <pre><code>Resolving dependencies...
  Could not find gem 'activerecord-sqlserver-adapter (~&gt; 4.0.0) ruby' in the gems available on this machine.
  </code></pre>
  
  <p><a href="https://rubygems.org/gems/activerecord-sqlserver-adapter" rel="nofollow">rubygems.org</a> show the latest version as <code>3.2.12</code>. How can I <code>bundle install</code> version <code>~&gt; 4.0.0</code> as <code>3.2.12</code> only supports ActiveRecord 3.x?</p>