diff --git a/databases/py-carbon/Makefile b/databases/py-carbon/Makefile
index 999b324715a3..07f8edf147e4 100644
--- a/databases/py-carbon/Makefile
+++ b/databases/py-carbon/Makefile
@@ -1,39 +1,45 @@
 # Created by: Evan Sarmiento <bsdports@wayfair.com>
 
 PORTNAME=	carbon
 PORTVERSION=	1.1.10
 CATEGORIES=	databases python
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	bofh@FreeBSD.org
 COMMENT=	Backend storage application for graphite
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}cachetools>=1.1.0:devel/py-cachetools@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}service_identity>=0:security/py-service_identity@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}twisted>=13.2.0:devel/py-twisted@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}txamqp>=0.3:net/py-txamqp@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}urllib3>=0:net/py-urllib3@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}whisper>=0.9.10:databases/py-whisper@${PY_FLAVOR}
 
-USES=		python:3.5-3.8
+USES=		python
 USE_GITHUB=	yes
 GH_ACCOUNT=	graphite-project
 USE_PYTHON=	distutils py3kplist
 USE_RC_SUBR=	carbon
 
 MAKE_ENV=	GRAPHITE_NO_PREFIX=yes
 
 NO_ARCH=	yes
 SUB_LIST=	PYTHON_CMD=${PYTHON_CMD}
 
+.include <bsd.port.pre.mk>
+
+.if ${PYTHON_REL} > 30900
+BROKEN=		Python-3.9 is not supported
+.endif
+
 post-patch:
 	@${REINPLACE_CMD} 's|%%PREFIX%%|${PREFIX}|g' ${WRKSRC}/setup.py
 
 post-install:
 	${RM} -r ${STAGEDIR}${PREFIX}/examples/init.d
 	${RMDIR} ${STAGEDIR}${PREFIX}/examples
 
 .include <bsd.port.mk>