Often we release updates to the agent. Follow the steps below to bring your agent up to date.
If you're using our OS packagers for Deb/RPM then they will simply tie into your package manager and it will notify you as part of your normal system upgrades processes e.g. when you do your regular update review or if you have something like update-notifier.
Finally, there's a JSON version output of the latest agent version available to parse programmatically.
You can also force an update:
CentOS / Fedora / Red Hat / CloudLinux
sudo yum clean all
sudo yum update sd-agent
Debian / Ubuntu
sudo apt-get update
sudo apt-get install sd-agent