diff --git a/textproc/btparse/Makefile b/textproc/btparse/Makefile
index 7a87deba3c96..d66d09cb815a 100644
--- a/textproc/btparse/Makefile
+++ b/textproc/btparse/Makefile
@@ -1,23 +1,26 @@
 PORTNAME=	btparse
 PORTVERSION=	0.35
 PORTREVISION=	3
 CATEGORIES=	textproc
 MASTER_SITES=	CPAN
 MASTER_SITE_SUBDIR=	CPAN:AMBS/btparse
 
 MAINTAINER=	perl@FreeBSD.org
 COMMENT=	C library for parsing and processing BibTeX data files
 WWW=		https://www.gerg.ca/software/btOOL/
 
+DEPRECATED=	btparse has not updated for 19 years while p5-Text-BibTeX is up-to-date. Use textproc/p5-Text-BibTeX instead
+EXPIRATION_DATE=2024-08-31
+
 USES=		libtool pathfix perl5
 USE_PERL5=	build
 
 GNU_CONFIGURE=	yes
 USE_LDCONFIG=	yes
 
 CONFLICTS_INSTALL=	p5-Text-BibTeX # bin/bibparse
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/libbtparse.so
 
 .include <bsd.port.mk>