diff --git a/sysutils/sample/Makefile b/sysutils/sample/Makefile
index c4505b85e992..e0e5299fc18a 100644
--- a/sysutils/sample/Makefile
+++ b/sysutils/sample/Makefile
@@ -1,35 +1,40 @@
 PORTNAME=	sample
 PORTVERSION=	0.02f
 PORTREVISION=	1
 CATEGORIES=	sysutils
 
 MAINTAINER=	wg@FreeBSD.org
 COMMENT=	Examine periodic stack traces of all running processes
 
+BROKEN_FreeBSD_13=	does not build: vm_page_unhold(page) API has changed
+BROKEN_FreeBSD_14=	does not build: vm_page_unhold(page) API has changed
+DEPRECATED=		abandoned upstream, incompatible with newer kernels
+EXPIRATION_DATE=	2021-12-31
+
 LICENSE=	BSD3CLAUSE
 
 ONLY_FOR_ARCHS=	amd64
 ONLY_FOR_ARCHS_REASON=	device driver part of the program only supports amd64
 
 BUILD_DEPENDS=	${LOCALBASE}/lib/libbfd.a:devel/libbfd \
 		${LOCALBASE}/lib/libiberty.a:devel/gnulibiberty \
 		${LOCALBASE}/lib/libxo.a:devel/libxo
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	freenas
 GH_TAGNAME=	45e2b86
 
 BINARY_ALIAS=	python=${PYTHON_CMD}
 USES=		python:build kmod
 USE_PYTHON=	cython
 
 MAKE_ENV=	SYSDIR=${SRC_BASE}/sys
 
 SSP_UNSAFE=	yes
 
 do-install:
 	${INSTALL_KLD} ${WRKSRC}/driver/sample_driver.ko ${STAGEDIR}${KMODDIR}
 	${INSTALL_MAN} ${WRKSRC}/sample/sample.8 ${STAGEDIR}${PREFIX}/man/man8
 	${INSTALL_PROGRAM} ${WRKSRC}/sample/sample ${STAGEDIR}${PREFIX}/bin
 
 .include <bsd.port.mk>