diff --git a/security/hpenc/Makefile b/security/hpenc/Makefile
index 08d6ff966a1c..c5239c7b1893 100644
--- a/security/hpenc/Makefile
+++ b/security/hpenc/Makefile
@@ -1,24 +1,27 @@
 PORTNAME=	hpenc
 PORTVERSION=	3.0
-PORTREVISION=	6
+PORTREVISION=	7
 CATEGORIES=	security
 
 MAINTAINER=	vsevolod@FreeBSD.org
 COMMENT=	Fast authenticated encryption CLI tool
 WWW=		https://github.com/vstakhov/hpenc/
 
 LICENSE=	BSD2CLAUSE
 
+DEPRECATED=	Ancient software, does not build with CMake 4
+EXPIRATION_DATE=2026-11-30
+
 LIB_DEPENDS=	libsodium.so:security/libsodium
 
 USES=		cmake compiler:c++11-lib ssl
 USE_GITHUB=	yes
 GH_ACCOUNT=	vstakhov
 
 PLIST_FILES=	bin/hpenc bin/hpenc-${PORTVERSION} share/man/man1/hpenc.1.gz
 
 post-install:
 	${INSTALL_MAN} ${WRKSRC}/doc/hpenc.1 ${STAGEDIR}${PREFIX}/share/man/man1
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/bin/hpenc
 
 .include <bsd.port.mk>