In order to use a nightly build, put the following to your /etc/yum.repos.d/openvz.repo:
<pre><nowiki>[vzctl-nightly] name=OpenVZ vzctl nightly builds baseurl=http://download.openvz.org/utils/nightlies/vzctl/current enabled=1 gpgcheck=1 gpgkey=http://download.openvz.org/RPM-GPG-Key-OpenVZ</nowiki></pre>