title: Install specific version of Ansible (2.3.1.0) on Ubuntu 18.04 LTS
body: <p>I want to install Ansible 2.3.1.0 on Ubuntu 18.04. </p>
  
  <p>When I run <code>apt-get install ansible</code>, it installs the version 2.5.3.</p>
  
  <p>Below is output of <code>apt-cache policy ansible</code>. After that, I removed the installation.</p>
  
  <pre><code>ansible:
    Installed: (none)
    Candidate: 2.5.3-1ppa~bionic
    Version table:
       2.5.3-1ppa~bionic 500
          500 http://ppa.launchpad.net/ansible/ansible/ubuntu bionic/main amd64 Packages
          500 http://ppa.launchpad.net/ansible/ansible/ubuntu bionic/main i386 Packages
       2.5.1+dfsg-1 500
          500 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
          500 http://us.archive.ubuntu.com/ubuntu bionic/universe i386 Packages
  </code></pre>