diff --git a/archivers/xmill/Makefile b/archivers/xmill/Makefile
index 415e37950bb5..91f6e2fd56f7 100644
--- a/archivers/xmill/Makefile
+++ b/archivers/xmill/Makefile
@@ -1,43 +1,46 @@
 PORTNAME=	xmill
 DISTVERSION=	0.8
 CATEGORIES=	archivers
 MASTER_SITES=	SF
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Efficient compressor for XML
 WWW=		https://sourceforge.net/projects/xmill/
 
+DEPRECATED=	Outdated and abandoned, last release in 2004
+EXPIRATION_DATE=2025-07-31
+
 USES=		dos2unix zip
 DOS2UNIX_FILES=	${MAKEFILE} XMill/*.cpp
 USE_CXXSTD=	c++14
 
 MAKEFILE=	makefile
 
 WRKSRC=		${WRKDIR}/${PORTNAME}
 
 PLIST_FILES=	bin/xcmill bin/xdemill bin/xmilltest bin/xmillexample \
 		bin/xmillinspect bin/ppmzip
 PORTDOCS=	*
 PORTEXAMPLES=	*
 
 OPTIONS_DEFINE=	DOCS EXAMPLES
 
 post-patch:
 # Allow to build with modern GCC
 	@${REINPLACE_CMD} -e 's,friend,& class,' ${WRKSRC}/XMill/*.?pp \
 		${WRKSRC}/xmillinspect/xmillinspect.h
 
 do-install:
 .for p in ${PLIST_FILES:T}
 	(cd ${WRKSRC}/unix && ${INSTALL_PROGRAM} ${p} ${STAGEDIR}${PREFIX}/bin)
 .endfor
 
 do-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 	(cd ${WRKSRC}/documentation && ${INSTALL_DATA} * ${STAGEDIR}${DOCSDIR})
 
 do-install-EXAMPLES-on:
 	@${MKDIR} ${STAGEDIR}${EXAMPLESDIR}
 	(cd ${WRKSRC}/examples && ${INSTALL_DATA} * ${STAGEDIR}${EXAMPLESDIR})
 
 .include <bsd.port.mk>