diff --git a/arpwatch.spec b/arpwatch.spec
index 082aaea..140869a 100644
--- a/arpwatch.spec
+++ b/arpwatch.spec
@@ -3,7 +3,7 @@
 Name: arpwatch
 Epoch: 14
 Version: 2.1a15
-Release: 20%{?dist}
+Release: 21%{?dist}
 Summary: Network monitoring tools for tracking IP addresses on a network
 Group: Applications/System
 License: BSD with advertising
@@ -153,6 +153,9 @@ fi
 %verify(not md5 size mtime) %config(noreplace) %{_vararpwatch}/ethercodes.dat
 
 %changelog
+* Wed Jul 18 2012 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 14:2.1a15-21
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_18_Mass_Rebuild
+
 * Thu May 31 2012 Aleš Ledvinka <aledvink@redhat.com> 14:2.1a15-20
 - fix supplementary group list (#825328) (CVE-2012-2653)