Index: head/devel/elixir-red_black_tree/Makefile
===================================================================
--- head/devel/elixir-red_black_tree/Makefile	(revision 459422)
+++ head/devel/elixir-red_black_tree/Makefile	(revision 459423)
@@ -1,22 +1,24 @@
 # $FreeBSD$
 
 PORTNAME=	red_black_tree
 PORTVERSION=	1.2.0
 DISTVERSIONPREFIX=	v
 CATEGORIES=	devel
 PKGNAMEPREFIX=	elixir-
 
 MAINTAINER=	olgeni@FreeBSD.org
 COMMENT=	Red-black tree implementation for Elixir
 
 LICENSE=	MIT
 
 IGNORE=		does not build with Elixir 1.3
+DEPRECATED=	No longer maintained upstream
+EXPIRATION_DATE=2018-02-18
 
 USES=		elixir
 USE_GITHUB=	yes
 GH_ACCOUNT=	SenecaSystems
 
 MIX_REWRITE=	yes
 
 .include <bsd.port.mk>