diff --git a/Makefile b/Makefile
index a9ee974..c884b57 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,5 @@
-# howto add rule updates:
+include /usr/share/dpkg/pkg-info.mk# howto add rule updates:
+
 # edit paths ($srcdir) in changes.pl 
 # update changes.diff - verify changes!
 
@@ -16,11 +17,9 @@
 #
 # edit debin/rules to apply updates
 
-PKGREL=3
-SAVER=3.4.2
-OPKGNAME = Mail-SpamAssassin-${SAVER}
-NPKGNAME = proxmox-spamassassin_${SAVER}
-DEB = proxmox-spamassassin_${SAVER}-${PKGREL}_amd64.deb
+OPKGNAME = Mail-SpamAssassin-${DEB_VERSION_UPSTREAM}
+NPKGNAME = proxmox-spamassassin_${DEB_VERSION_UPSTREAM}
+DEB = proxmox-spamassassin_${DEB_VERSION_UPSTREAM_REVISION}_amd64.deb
 
 EXTRA_RULES = KAM.cf