[CentOS] repository for mod_security

[Bowie Bailey]

I want to add mod_security to my Apache server running CentOS 5.3 and am
trying to find a repository to get it from.  I found it in EPEL, but
they have version 2.1.7, which is over a year old according to what I
found on the modsecurity.org website.  Is there a repository which is
keeping this up to date?  Or should I just build it from source?

-- 
Bowie