[CentOS] named Update Problem

Hello,

I have enabled for a Domain DNSSEC and it working correct, after I change the 
rights for /var/named to root:named 0770

but after a update it is always change back to root:named 0750
	
after this, DNSSEC don't work any more?

named have no right to write his secure files.

Is there a way to fix this

Thanks,
-- 
mit freundlichen Grüssen / best regards,

 Günther J. Niederwimmer