Flagging recompiled packages to circumvent Yum Updates

Following Sven Knispel's instructions
(http://cri.ch/linux/docs/sk0017.html), today I recompiled freetype with
the bytecode interpreter turned on, only to be told by Puplet that new
freetype packages were available, packages which turned out to be the
very ones I'd just recompiled (freetype-2.2.1-16.fc6,
freetype-devel-2.2.1-16.fc6).

Is there a way of flagging a particular version of a package such that
yum will prompt for an update only when a later iteration eventually
arrives?

Regards,

Michael