diff --git a/kdebase-workspace.spec b/kdebase-workspace.spec
index ab6944c..0326c82 100644
--- a/kdebase-workspace.spec
+++ b/kdebase-workspace.spec
@@ -6,7 +6,7 @@ Summary: K Desktop Environment - Workspace
 Name: kdebase-workspace
 Version: 4.0.0
 
-Release: 5%{?dist}
+Release: 6%{?dist}
 Source0: ftp://ftp.kde.org/pub/kde/stable/%{version}/src/kdebase-workspace-%{version}.tar.bz2
 License: GPLv2
 Group: User Interface/Desktops
@@ -24,6 +24,9 @@ Patch4: kdebase-workspace-4.0.0-kde#155122.patch
 Obsoletes: kdebase-kdm < 6:%{version}-%{release}
 Provides: kdebase-kdm = 6:%{version}-%{release}
 
+# upgrade path: kdebase(3) -> kdebase-workspace
+Obsoletes: kdebase < 6:4
+
 # kdmtheme's functionality is now provided by kdebase-workspace itself
 Obsoletes: kdmtheme < 1.3
 
@@ -215,6 +218,9 @@ xdg-desktop-menu forceupdate 2> /dev/null || :
 
 
 %changelog
+* Wed Jan 23 2008 Rex Dieter <rdieter@fedoraproject.org> 4.0.0-6
+- Obsoletes: kdebase < 6:4
+
 * Wed Jan 09 2008 Rex Dieter <rdieter[AT]fedoraproject.org> 4.0.0-5
 - initial login with white background (#428131, kde#155122)