diff --git a/graphics/glosm/Makefile b/graphics/glosm/Makefile
index 0be587725509..b83a4995cb4e 100644
--- a/graphics/glosm/Makefile
+++ b/graphics/glosm/Makefile
@@ -1,36 +1,39 @@
 PORTNAME=	glosm
 PORTVERSION=	0.0.2
 DISTVERSIONPREFIX=	${PORTNAME}-
-PORTREVISION=	7
+PORTREVISION=	8
 CATEGORIES=	graphics geography
 
 MAINTAINER=	amdmi3@FreeBSD.org
 COMMENT=	3D OpenGL renderer for OpenStreetMap
 WWW=		https://github.com/AMDmi3/glosm
 
 LICENSE=	GPLv3+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
+DEPRECATED=	Abandoned upstream, does not build with CMake 4
+EXPIRATION_DATE=2026-11-30
+
 LIB_DEPENDS=	libpng.so:graphics/png \
 		libexpat.so:textproc/expat2
 
 USES=		cmake gl sdl tar:bzip2 xorg
 USE_GL=		gl
 USE_XORG=	x11
 USE_SDL=	sdl
 USE_CXXSTD=	c++98
 USE_GITHUB=	yes
 GH_ACCOUNT=	AMDmi3
 TEST_TARGET=	test
 
 PORTDOCS=	README ChangeLog
 
 OPTIONS_DEFINE=	DOCS
 
 post-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 .for f in ${PORTDOCS}
 	${INSTALL_DATA} ${WRKSRC}/${f} ${STAGEDIR}${DOCSDIR}/
 .endfor
 
 .include <bsd.port.mk>