Index: head/textproc/py-recommonmark/Makefile
===================================================================
--- head/textproc/py-recommonmark/Makefile	(revision 503867)
+++ head/textproc/py-recommonmark/Makefile	(revision 503868)
@@ -1,24 +1,25 @@
 # $FreeBSD$
 
 PORTNAME=	recommonmark
 PORTVERSION=	0.5.0
+PORTREVISION=	1
 CATEGORIES=	textproc python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	brooks@FreeBSD.org
 COMMENT=	CommonMark bridge for docutils and Sphinx
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/license.md
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}CommonMark>=0.7.3:textproc/py-CommonMark@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}docutils>=0.11:textproc/py-docutils@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}sphinx>=1.3.1:textproc/py-sphinx@${PY_FLAVOR}
 
 USES=		python
-USE_PYTHON=	autoplist distutils
+USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>