diff --git a/cups.spec b/cups.spec
index 4f2fbef..fc197a0 100644
--- a/cups.spec
+++ b/cups.spec
@@ -46,6 +46,7 @@ Patch19: cups-eggcups.patch
 Patch20: cups-getpass.patch
 Patch21: cups-driverd-timeout.patch
 Patch22: cups-translate-prompt.patch
+Patch23: cups-not-modified.patch
 Patch100: cups-lspp.patch
 Epoch: 1
 Url: http://www.cups.org/
@@ -150,6 +151,7 @@ lpd emulation.
 %patch20 -p1 -b .getpass
 %patch21 -p1 -b .driverd-timeout
 %patch22 -p1 -b .translate-prompt
+%patch23 -p1 -b .not-modified
 
 %if %lspp
 %patch100 -p1 -b .lspp
@@ -432,6 +434,9 @@ rm -rf $RPM_BUILD_ROOT
 %{cups_serverbin}/daemon/cups-lpd
 
 %changelog
+* Wed Nov 29 2006 Tim Waugh <twaugh@redhat.com>
+- Fixed If-Modified-Since handling (bug #217556).
+
 * Mon Nov 27 2006 Tim Waugh <twaugh@redhat.com> 1:1.2.7-5
 - Better LSPP fix for bug #216855.