Index: head/math/py-PyMetis/Makefile
===================================================================
--- head/math/py-PyMetis/Makefile	(revision 497973)
+++ head/math/py-PyMetis/Makefile	(revision 497974)
@@ -1,21 +1,21 @@
 # $FreeBSD$
 
 PORTNAME=	PyMetis
 DISTVERSION=	2016.2
 CATEGORIES=	math python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Python wrapper for the Metis graph partititioning software
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}six>0:devel/py-six@${PY_FLAVOR}
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}six>0:devel/py-six@${PY_FLAVOR}
 
-USES=		localbase python
+USES=		localbase python:-3.6
 USE_PYTHON=	distutils autoplist
 
 .include <bsd.port.mk>