diff --git a/cad/libopencad/Makefile b/cad/libopencad/Makefile
index e778081fedf5..07878972f665 100644
--- a/cad/libopencad/Makefile
+++ b/cad/libopencad/Makefile
@@ -1,20 +1,23 @@
 PORTNAME=	libopencad
 PORTVERSION=	0.2.0
-PORTREVISION=	5
+PORTREVISION=	6
 CATEGORIES=	cad graphics geography
 
 MAINTAINER=	lbartoletti@FreeBSD.org
 COMMENT=	Library which provides a way to read/write CAD (DWG/DXF/DXFB) files
 WWW=		https://trac.osgeo.org/gdal/wiki/DWG_driver
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+DEPRECATED=	Abandoned upstream, does not build with CMake 4
+EXPIRATION_DATE=2026-11-30
+
 USE_GITHUB=	yes
 GH_ACCOUNT=	sandyre
 
 USES=		cmake cpe compiler:c++11-lib
 CPE_VENDOR=	${PORTNAME}_project
 USE_LDCONFIG=	yes
 
 .include <bsd.port.mk>