Index: head/science/py-mlpy/Makefile
===================================================================
--- head/science/py-mlpy/Makefile	(revision 497969)
+++ head/science/py-mlpy/Makefile	(revision 497970)
@@ -1,26 +1,26 @@
 # Created by: Wen Heping <wenheping@gmail.com>
 # $FreeBSD$
 
 PORTNAME=	mlpy
 PORTVERSION=	3.5.0
 PORTREVISION=	7
 CATEGORIES=	science python
 MASTER_SITES=	SF/${PORTNAME}/${PORTNAME}%20${PORTVERSION}
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	wen@FreeBSD.org
 COMMENT=	High performance Python package for predictive modeling
 
 LICENSE=	GPLv3
 
 BUILD_DEPENDS=	${PYNUMPY}
 RUN_DEPENDS:=	${BUILD_DEPENDS}
 LIB_DEPENDS=	libgsl.so:math/gsl
 
 USE_LDCONFIG=	yes
 CFLAGS+=	-I${LOCALBASE}/include -I${PYTHON_SITELIBDIR}/numpy/core
 LDFLAGS+=	-L${LOCALBASE}/lib
-USES=		python
+USES=		python:-3.6
 USE_PYTHON=	distutils autoplist cython
 
 .include <bsd.port.mk>