diff --git a/math/py-cdecimal/Makefile b/math/py-cdecimal/Makefile
index 7ce6f0093577..d2481f7e89bd 100644
--- a/math/py-cdecimal/Makefile
+++ b/math/py-cdecimal/Makefile
@@ -1,22 +1,31 @@
 # Created by: Maksym Sobolyev <sobomax@FreeBSD.org>
 
 PORTNAME=	cdecimal
 PORTVERSION=	2.3
 PORTREVISION=	1
 CATEGORIES=	math
 MASTER_SITES=	http://www.bytereef.org/software/mpdecimal/releases/
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Fast drop-in replacement for the Decimal module
 
 LICENSE=	BSD2CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
+DEPRECATED=	upstream does not support it after Python-3.2
+
 USES=		python:3.6-3.8
 USE_PYTHON=	distutils autoplist
 
+.include <bsd.port.pre.mk>
+
+.if ${PYTHON_VER} == 3.9
+# Note: a fast C implementation of the decimal module (_decimal) is bundled with Python
+BROKEN=	no member named 'tp_print' in 'struct _typeobject'
+.endif
+
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}/cdecimal*.so
 
-.include <bsd.port.mk>
+.include <bsd.port.post.mk>