Index: head/devel/py-flake8/Makefile
===================================================================
--- head/devel/py-flake8/Makefile	(revision 432823)
+++ head/devel/py-flake8/Makefile	(revision 432824)
@@ -1,24 +1,25 @@
 # Created by: William Grzybowski <william88@gmail.com>
 # $FreeBSD$
 
 PORTNAME=	flake8
 PORTVERSION=	3.2.1
+PORTREVISION=	1
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	wg@FreeBSD.org
 COMMENT=	Code checking using pep8 and pyflakes
 
 LICENSE=	MIT
 
 BUILD_DEPENDS?=	${PYTHON_PKGNAMEPREFIX}pytest-runner>=0:devel/py-pytest-runner
 RUN_DEPENDS?=	${PYTHON_PKGNAMEPREFIX}mccabe>=0.5.0:devel/py-mccabe \
 		${PYTHON_PKGNAMEPREFIX}pycodestyle>=2.0.0:devel/py-pycodestyle \
 		${PYTHON_PKGNAMEPREFIX}pyflakes>=0.8.1:devel/py-pyflakes
 
 USES?=		python
-USE_PYTHON=	autoplist distutils
+USE_PYTHON=	autoplist concurrent distutils
 NO_ARCH=	yes
 
 .include <bsd.port.mk>