diff --git a/textproc/atom/Makefile b/textproc/atom/Makefile
index 874709f44883..b68517bef513 100644
--- a/textproc/atom/Makefile
+++ b/textproc/atom/Makefile
@@ -1,30 +1,33 @@
 PORTNAME=	atom
 PORTVERSION=	1.0
 PORTREVISION=	1
 CATEGORIES=	textproc
 MASTER_SITES=	http://www.bayofrum.net/dist/atom/ \
 		http://muuz.deadbbs.com/FreeBSD/atom/
 
 MAINTAINER=	crees@FreeBSD.org
 COMMENT=	Converts text files to html with special attributes
 WWW=		https://www.bayofrum.net/dist/atom/
 
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/COPYING
 
+DEPRECATED=	Upstream is gone and utility is considered obsolete
+EXPIRATION_DATE=2025-04-30
+
 GNU_CONFIGURE=	yes
 
 PLIST_FILES=	bin/atom share/man/man1/atom.1.gz
 PORTDOCS=	README TODO testFile
 
 OPTIONS_DEFINE=	DOCS
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/${PORTNAME} ${STAGEDIR}${PREFIX}/bin/
 	${INSTALL_MAN} ${WRKSRC}/${PORTNAME}.1 ${STAGEDIR}${PREFIX}/share/man/man1/
 
 do-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 	${INSTALL_DATA} ${PORTDOCS:S,^,${WRKSRC}/,} ${STAGEDIR}${DOCSDIR}
 
 .include <bsd.port.mk>