Index: head/databases/py-marshmallow-sqlalchemy/Makefile
===================================================================
--- head/databases/py-marshmallow-sqlalchemy/Makefile	(revision 501504)
+++ head/databases/py-marshmallow-sqlalchemy/Makefile	(revision 501505)
@@ -1,24 +1,24 @@
 # Created by: Mark Felder <feld@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	marshmallow-sqlalchemy
 PORTVERSION=	0.16.3
 CATEGORIES=	databases python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	SQLAlchemy integration with the marshmallow serialization library
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}marshmallow>=2.0.0:devel/py-marshmallow@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}sqlalchemy12>=0.9.7:databases/py-sqlalchemy12@${PY_FLAVOR}
 
-USES=		python
+USES=		python:3.5+
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>