How to find installed pure-ftpd version?

Trying to find which version of pure-ftpd my server is using, in order to help troubleshoot a probably FTP client issue.

I'm on CentOS 6.7, but would prefer a more generic/universal method, if possible.

I found this method (https://askubuntu.com/questions/153491/how-to-find-pure-ftpd-version), but it only works for Ubuntu, or other systems (Debian-based, etc) that are using the apt package manager.

I suppose something with the yum package manager might work? But again, would prefer a more generic/universal method, if possible.

I tried looking at the man page, and invoking the pure-ftpd command, but found nothing to help indicate which version is installed.

Thanks!