diff --git a/share/mk/Makefile b/share/mk/Makefile
index 80d331122d5..58cd1b7289d 100644
--- a/share/mk/Makefile
+++ b/share/mk/Makefile
@@ -1,4 +1,4 @@
-#	$Id: Makefile,v 1.20 1998/09/09 10:17:34 bde Exp $
+#	$Id: Makefile,v 1.21 1998/11/11 05:21:26 asami Exp $
 #	@(#)Makefile	8.1 (Berkeley) 6/8/93
 
 FILES=	bsd.README
@@ -13,4 +13,7 @@ beforeinstall:
 	${INSTALL} -c -o ${BINOWN} -g ${BINGRP} -m ${SHAREMODE} ${FILES} \
 	    ${DESTDIR}${BINDIR}/mk
 
+afterinstall:
+	date '+%Y%m%d' > /var/db/pkg/.mkversion
+
 .include <bsd.prog.mk>