diff --git a/mail/gmime24-sharp/Makefile b/mail/gmime24-sharp/Makefile
index 331a6e5dd5fa..65da60072a06 100644
--- a/mail/gmime24-sharp/Makefile
+++ b/mail/gmime24-sharp/Makefile
@@ -1,30 +1,33 @@
 # Created by: Tom McLaughlin <tmclaugh@sdf.lonestar.org>
 
 PORTREVISION=	5
 CATEGORIES=	mail
 PKGNAMESUFFIX=	24-sharp
 
 MAINTAINER=	mono@FreeBSD.org
 COMMENT=	Mono bindings for gmime
 
 LIB_DEPENDS=	libgmime-2.4.so:mail/gmime24
 
+DEPRECATED=	Use mail/gmime26-sharp
+EXPIRATION_DATE=2021-11-29
+
 MASTERDIR=	${.CURDIR}/../gmime24
 BUILD_WRKSRC=	${WRKSRC}/mono
 INSTALL_WRKSRC=	${BUILD_WRKSRC}
 DESCR=		${.CURDIR}/pkg-descr
 PLIST=		${.CURDIR}/pkg-plist
 
 USES=		gnome mono
 USE_GNOME=	glib20 gtksharp20
 CONFIGURE_ARGS=	--enable-mono=yes
 
 # Else we conflict with mail/gmime24
 OPTIONS_EXCLUDE=	DOCS
 
 # Done in pre-configure because master port has a post-patch target already.
 pre-configure:
 	@${REINPLACE_CMD} -e 's|.@GMIME_VERSION@||g' \
 		${WRKSRC}/mono/gmime-sharp.dll.config.in
 
 .include "${MASTERDIR}/Makefile"