Package versioning troubles

[Svata Dedic <belgarat@mail.klfree.net>]

Hello,

sorry for a newbie question, but:
I have patched a little some package (iptraf, in fact) - and created a
package with adjusted version number. I added a changelog entry,
changing the patchlevel number (the number after dash), so the new
.deb's version is 2.7.0-9 (the original version was 2.7.0-8).

When I add it to my repository (rebuild Packages.gz), and do apt-get
update ; apt-get install iptraf, the original iptraf package version
2.7.0-8 is not upgraded to 2.7.0-9.

I really don't know why, and I suspect I am making some very stupid
error. For a short play, the repository is at
	deb http://belgarat.klfree.net/klfree-debian/ testing unofficial

Thanks for any help,
-Svata