diff --git a/Makefile b/Makefile
index 485cf02..890d4fb 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,6 @@
-RELEASE=4.0
+VERSION != dpkg-parsechangelog -Sversion | cut -d- -f1
+PACKAGE != dpkg-parsechangelog -Ssource
+PKGREL  != dpkg-parsechangelog -Sversion | cut -d- -f2
 
 # h2xs -Afn LibArchive
 # h2xs -an LibArchive /usr/include/archive.h /usr/include/archive_entry.h