Override ports security restrictions?

[Tim DeBoer]

I'm trying to install /usr/ports/graphics/png

===>  png-1.2.12_1 has known vulnerabilities:
=> png -- DoS crash vulnerability.
   Reference: <http://www.FreeBSD.org/ports/portaudit/4cb9c513-03ef-11dc-a51d-0019b95d4f14.html>
=> Please update your ports tree and try again.
*** Error code 1

While I can appreciate the attempt to protect me from doing something
"stupid", I really do need to get this installed, and from what I've
read, it looks like a non-issue for me.

Is there a way to get "force" ports to install this package?

Thanks!

-- 
Tim DeBoer
Just once, I'd like it if someone called me "Sir".
Without adding "You're creating a scene".