diff --git a/math/xgraph/Makefile b/math/xgraph/Makefile
index 1aceb5743f3d..f0d0942a614d 100644
--- a/math/xgraph/Makefile
+++ b/math/xgraph/Makefile
@@ -1,36 +1,39 @@
 PORTNAME=	xgraph
 PORTVERSION=	11.3.2.20000910
-PORTREVISION=	5
+PORTREVISION=	6
 CATEGORIES=	math print
 MASTER_SITES=	ftp://ftp.cs.utoronto.ca/pub/radford/
 DISTNAME=	xgraph-11
 
 MAINTAINER=	bofh@FreeBSD.org
 COMMENT=	Program that helps you plot graphs
 
+DEPRECATED=	Obsolete software, unmaintained upstream
+EXPIRATION_DATE=	2026-04-30
+
 LICENSE=	XGRAPH
 LICENSE_NAME=	xgraph license
 LICENSE_FILE=	${WRKSRC}/COPYING
 LICENSE_PERMS=	dist-mirror dist-sell pkg-mirror pkg-sell auto-accept
 
 USES=		imake tar:Z xorg
 USE_XORG=	x11 xext
 
 WRKSRC=		${WRKDIR}/${PORTNAME}
 
 OPTIONS_DEFINE=	EXAMPLES
 
 .include <bsd.port.options.mk>
 
 .if ${OPSYS} == FreeBSD
 CFLAGS+=	-Wno-error=int-conversion
 .endif
 
 post-extract:
 	@${SED} -ne '2,19 {s|^ \* *||;p;}' < ${WRKSRC}/copyright.h > ${WRKSRC}/COPYING
 
 post-install-EXAMPLES-on:
 	@${MKDIR} ${STAGEDIR}${PREFIX}/share/examples/xgraph
 	${INSTALL_DATA} ${WRKSRC}/examples/*.xg ${STAGEDIR}${PREFIX}/share/examples/xgraph
 
 .include <bsd.port.mk>