Index: head/graphics/py-visvis/Makefile
===================================================================
--- head/graphics/py-visvis/Makefile	(revision 531632)
+++ head/graphics/py-visvis/Makefile	(revision 531633)
@@ -1,37 +1,37 @@
 # Created by: Rainer Hurling <rhurlin@gwdg.de>
 # $FreeBSD$
 
 PORTNAME=	visvis
 PORTVERSION=	1.12.3
 CATEGORIES=	graphics python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	rhurlin@gwdg.de
 COMMENT=	Object oriented approach to visualization of 1D to 4D data
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/license.txt
 
 RUN_DEPENDS=	${PYNUMPY} \
 		${PYTHON_PKGNAMEPREFIX}PyOpenGL>=0:graphics/py-PyOpenGL@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pyside2>=0:devel/pyside2@${PY_FLAVOR}
 LIB_DEPENDS=	libfltk.so:x11-toolkits/fltk
 
-USES=		gl python pyqt:5
+USES=		gl python:3.5+ pyqt:5
 USE_GL=		gl
 USE_PYQT=	core gui
 USE_PYTHON=	autoplist distutils
 USE_WX=		3.0+
 
 NO_ARCH=	yes
 
 .include <bsd.port.pre.mk>
 
 .if ${PYTHON_REL} >= 3400
 RUN_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}imageio>=0:graphics/py-imageio@${PY_FLAVOR}
 .else
 RUN_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}imageio24>=0:graphics/py-imageio24@${PY_FLAVOR}
 .endif
 
 .include <bsd.port.post.mk>