title: How can I upgrade Docker on a Mac?
body: <p>I tried just 'docker-machine upgrade' and that did some work but I don't seem to have the latest CLI.</p>
  
  <p>If I do 'docker version' I get:</p>
  
  <pre><code>Client:
   Version:      1.8.2
   API version:  1.20
   Go version:   go1.4.2
   Git commit:   0a8c2e3
   Built:        Thu Sep 10 19:10:10 UTC 2015
   OS/Arch:      darwin/amd64
  
  Server:
   Version:      1.11.2
   API version:  1.23
   Go version:   go1.5.4
   Git commit:   b9f10c9
   Built:        2016-06-01T21:20:08.558909126+00:00
   OS/Arch:      linux/amd64
  </code></pre>
  
  <p>I understand there are some new commands I'm not seeing so I suspect I don't have the latest software.</p>