diff --git a/audio/osalp/Makefile b/audio/osalp/Makefile
index 5e50238a8628..2c7f34dbb198 100644
--- a/audio/osalp/Makefile
+++ b/audio/osalp/Makefile
@@ -1,40 +1,43 @@
 # Created by: ijliao
 
 PORTNAME=	osalp
 PORTVERSION=	0.7.5
 PORTREVISION=	7
 CATEGORIES=	audio
 MASTER_SITES=	SF/${PORTNAME}/${PORTNAME}/${PORTVERSION}-beta
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Open Source Audio Library Project
 
+DEPRECATED=	Abandoned upstream, listed as beta and no new release since 2008
+EXPIRATION_DATE=2021-12-31
+
 RUN_DEPENDS=	mpg123:audio/mpg123
 LIB_DEPENDS=	libmp3lame.so:audio/lame \
 		libvorbis.so:audio/libvorbis
 
 USES=		libtool localbase:ldflags
 USE_CXXSTD=	c++98
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--enable-all
 
 CFLAGS+=	-fPIC -DPIC
 
 USE_LDCONFIG=	yes
 
 PLIST_SUB=	VERSION=${PORTVERSION}
 
 CONFLICTS=	libaudiofile-[0-9]*
 
 post-patch:
 	@${FIND} ${WRKSRC} -name "*.cc" | ${XARGS} ${REINPLACE_CMD} -E \
 	    's|iostream.h|iostream|; \
 	     s|[[:space:]]cout| std::cout|g; \
 	     s|[[:space:]]endl| std::endl|g; \
 	     s|[[:space:]]cerr| std::cerr|g;'
 
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/libaflib-${PORTVERSION}.so \
 	    ${STAGEDIR}${PREFIX}/lib/aflib/lib*-${PORTVERSION}.so
 
 .include <bsd.port.mk>