diff --git a/irc/thales/Makefile b/irc/thales/Makefile
index a4320cb88f86..6e8e95a2cb11 100644
--- a/irc/thales/Makefile
+++ b/irc/thales/Makefile
@@ -1,49 +1,52 @@
 PORTNAME=	thales
 PORTVERSION=	1.0
 PORTREVISION=	5
 CATEGORIES=	irc
 MASTER_SITES=	GNU
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	IRC to MySQL gateway
 WWW=		https://www.gnu.org/software/thales/
 
 LICENSE=	GPLv2+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
+DEPRECATED=	End of life upstream
+EXPIRATION_DATE=2024-03-31
+
 RUN_DEPENDS=	${LOCALBASE}/bin/ircd:irc/ircd-hybrid
 
 USES=		gmake mysql shebangfix
 SHEBANG_FILES=	examples/MRTG/thalesinfo.pl
 USE_RC_SUBR=	thales
 
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--with-ircd=hybrid \
 		--prefix=${PREFIX}/sbin/thales \
 		--with-mysql=${LOCALBASE} \
 		--with-mysql-libraries=${LOCALBASE}/lib/mysql
 
 OPTIONS_DEFINE=	MODES DOCS EXAMPLES
 OPTIONS_DEFAULT=MODES
 MODES_DESC=		Support modes in the database
 
 MODES_CONFIGURE_OFF=	--enable-no-modes
 
 post-patch: .SILENT
 	${FIND} -d ${WRKSRC} -type d -name CVS -exec ${RM} -r {} \;
 	${REINPLACE_CMD} -e 's,thales.conf,${PREFIX}/etc/&,' \
 		${WRKSRC}/src/conf.h
 # Fix the build with -fno-common (for Clang 11 and GCC 10)
 	${REINPLACE_CMD} -e '/total_read, total_written/s,^,extern ,' \
 		${WRKSRC}/src/sockutil.h
 
 do-install:
 	@${MKDIR} ${STAGEDIR}${DATADIR}
 	${INSTALL_PROGRAM} ${WRKSRC}/src/thales ${STAGEDIR}${PREFIX}/sbin
 	${INSTALL_DATA} ${WRKSRC}/data/thales.conf.default ${STAGEDIR}${PREFIX}/etc
 	${INSTALL_DATA} ${WRKSRC}/data/*.sql ${STAGEDIR}${DATADIR}
 	@${MKDIR} ${STAGEDIR}${EXAMPLESDIR} ${STAGEDIR}${DATADIR}/tools
 	${CP} -r ${WRKSRC}/examples/* ${STAGEDIR}${EXAMPLESDIR}
 	${CP} -r ${WRKSRC}/tools/* ${STAGEDIR}${DATADIR}/tools
 
 .include <bsd.port.mk>