diff --git a/polish/libtlen/Makefile b/polish/libtlen/Makefile
index 39e5c0977e59..b16c41510fe3 100644
--- a/polish/libtlen/Makefile
+++ b/polish/libtlen/Makefile
@@ -1,25 +1,28 @@
 PORTNAME=	libtlen
 PORTVERSION=	20041113
 PORTREVISION=	1
 CATEGORIES=	polish net
 MASTER_SITES=	SF/${PORTNAME}/${PORTNAME}/${PORTNAME}-${PORTVERSION}
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Backend for interoperability with Tlen.pl, Polish IM network
 WWW=		https://libtlen.sourceforge.net/
 
+DEPRECATED=	Last upstream release was in 2004
+EXPIRATION_DATE=	2023-12-05
+
 GNU_CONFIGURE=	yes
 USE_LDCONFIG=	yes
 
 OPTIONS_DEFINE=	DOCS
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/libtlen.so
 
 post-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 .for f in libtlen.html libtlen.css AUTHORS TODO
 	${INSTALL_DATA} ${WRKSRC}/docs/${f} ${STAGEDIR}${DOCSDIR}
 .endfor
 
 .include <bsd.port.mk>