diff --git a/math/libpgmath/Makefile b/math/libpgmath/Makefile
index d765e6adf2e9..06320810a206 100644
--- a/math/libpgmath/Makefile
+++ b/math/libpgmath/Makefile
@@ -1,37 +1,40 @@
 PORTNAME=	libpgmath
 DISTVERSION=	g20191020
 PORTREVISION=	1
 CATEGORIES=	math
 
 MAINTAINER=	jmd@FreeBSD.org
 COMMENT=	Compiler-callable math intrinsics library
 WWW=		https://github.com/flang-compiler/flang
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
+DEPRECATED=	Depends on end of life devel/llvm70
+EXPIRATION_DATE=2022-12-31
+
 ONLY_FOR_ARCHS=	amd64
 
 LLVM_VER=	70
 BUILD_DEPENDS=	llvm${LLVM_VER}>=0:devel/llvm${LLVM_VER}
 RUN_DEPENDS=	llvm${LLVM_VER}>=0:devel/llvm${LLVM_VER}
 
 USES=		cmake
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	flang-compiler
 GH_PROJECT=	flang
 GH_TAGNAME=	d07daf3
 
 CC=		${LOCALBASE}/llvm${LLVM_VER}/bin/clang
 CXX=		${LOCALBASE}/llvm${LLVM_VER}/bin/clang++
 
 CMAKE_ARGS+=	-DLLVM_CONFIG=${LOCALBASE}/bin/llvm-config${LLVM_VER} -DLIBPGMATH_LLVM_LIT_EXECUTABLE=${LOCALBASE}/llvm${LLVM_VER}/bin/llvm-lit
 
 WRKSRC_SUBDIR=	runtime/libpgmath
 
 PLIST_FILES=	lib/libpgmath.a \
 		lib/libpgmath.so
 
 .include <bsd.port.mk>