title: How to force maven to always download parent pom
body: <p>I am using a parent pom to share dependencies and plugins across multiple projects.  The parent pom is deployed to our nexus repository.  In child project, parent pom is included like this:</p>
  
  <pre><code>&lt;project&gt;
    &lt;parent&gt;
      &lt;groupId&gt;com.mycompany.app&lt;/groupId&gt;
      &lt;artifactId&gt;app-parent&lt;/artifactId&gt;
      &lt;version&gt;1.0.0&lt;/version&gt;
    &lt;/parent&gt;
    &lt;groupId&gt;com.mycompany.app&lt;/groupId&gt;
    &lt;artifactId&gt;app-web&lt;/artifactId&gt;
    &lt;version&gt;1.2.0&lt;/version&gt;
    &lt;repositories&gt;
      &lt;repository&gt;
        &lt;id&gt;my-internal-site&lt;/id&gt;
        &lt;url&gt;http://nexus/repo&lt;/url&gt;
      &lt;/repository&gt;
    &lt;/repositories&gt;
  &lt;/project&gt;
  </code></pre>
  
  <p>When parent pom gets updated, would like to keep the same version so child project automatically gets the updated dependencies without updates.  However, it seems parent pom is not updated even if I use 
  <code>mvn clean -U</code></p>
  
  <p>How do I force maven (maven 3) to always download parent pom from remote repo even if it is already in local repository?</p>