diff --git a/sysutils/disktype/Makefile b/sysutils/disktype/Makefile
index cef8a7a468c6..e9dd52014620 100644
--- a/sysutils/disktype/Makefile
+++ b/sysutils/disktype/Makefile
@@ -1,28 +1,31 @@
 PORTNAME=	disktype
 PORTVERSION=	9
 CATEGORIES=	sysutils
 MASTER_SITES=	SF
 
 MAINTAINER=	ehaupt@FreeBSD.org
 COMMENT=	Disk formatting type autodetector
 WWW=		http://disktype.sourceforge.net/
 
+DEPRECATED=	Abandonware, last release in 2006 and no development since
+EXPIRATION_DATE=2023-03-31
+
 USES=		gmake
 
 PLIST_FILES=	bin/disktype
 PORTDOCS=	README
 
 OPTIONS_DEFINE=	DOCS
 
 post-patch:
 .for var in CFLAGS LDFLAGS CC
 	@${REINPLACE_CMD} -e 's|^\(${var}\)[ ]*=|\1 ?=|' \
 		${WRKSRC}/Makefile
 .endfor
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/${PORTNAME} ${STAGEDIR}${PREFIX}/bin
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 	${INSTALL_DATA} ${WRKSRC}/README ${STAGEDIR}${DOCSDIR}
 
 .include <bsd.port.mk>