diff --git a/office/operating-systems.xml b/office/operating-systems.xml
index fbbf523..7ebfeba 100755
--- a/office/operating-systems.xml
+++ b/office/operating-systems.xml
@@ -23,7 +23,7 @@ you provide your own CDs.</p>
 <li><a href="http://www.gentoo.org/index.xml">Gentoo Linux 1.4 (i386)</a></li>
 <li><a href="http://www.mandrakelinux.com/en/">Mandrake Linux 9.1 (i586)</a></li>
 <li><a href="http://www.redhat.com/">Red Hat Linux 9 (i386)</a></li>
-<li><a href="http://www.slackware.com/">Slackware Linux 9.0 (i386)</a></li>
+<li><a href="http://www.slackware.com/">Slackware Linux 9.1 (i386)</a></li>
 </ul>
 
 <p>More operating systems may be available.  As well, we can download any