diff --git a/lang/cython/Makefile b/lang/cython/Makefile
index 503daebf8559..e48553951d40 100644
--- a/lang/cython/Makefile
+++ b/lang/cython/Makefile
@@ -1,26 +1,29 @@
 PORTNAME=	cython
 PORTVERSION=	0.29.37
 PORTREVISION=	2
 CATEGORIES=	lang python
 MASTER_SITES=	PYPI \
 		https://github.com/cython/cython/releases/download/${PORTVERSION}/
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 DISTNAME=	Cython-${PORTVERSION}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Compiler for Writing C Extensions for the Python Language
 WWW=		https://cython.org/ \
 		https://github.com/cython/cython
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
+DEPRECTED=	Does not work with newer Python versions, use cython3
+EXPIRATION_DATE=2025-12-31
+
 USES=		compiler:c11 python:2.7-3.12
 USE_PYTHON=	allflavors autoplist concurrent distutils
 
 CONFLICTS_INSTALL=	py*-cython3 # bin/cygdb bin/cython bin/cythonize
 
 post-install:
 	${FIND} ${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}/Cython -name '*.so' -exec ${STRIP_CMD} {} +
 
 .include <bsd.port.mk>