Index: head/math/py-mip/Makefile
===================================================================
--- head/math/py-mip/Makefile	(revision 545464)
+++ head/math/py-mip/Makefile	(revision 545465)
@@ -1,22 +1,22 @@
 # $FreeBSD$
 
 PORTNAME=	mip
 DISTVERSION=	1.11.0
 CATEGORIES=	math
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Python MIP (Mixed-Integer Linear Programming) Tools
 
 LICENSE=	EPL
 
 BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}cffi>0:devel/py-cffi@${PY_FLAVOR}
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}cffi>0:devel/py-cffi@${PY_FLAVOR}
 
-USES=		python
+USES=		python:3.5+
 USE_PYTHON=	distutils autoplist
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>