Index: head/www/py-requests-toolbelt/Makefile
===================================================================
--- head/www/py-requests-toolbelt/Makefile	(revision 515268)
+++ head/www/py-requests-toolbelt/Makefile	(revision 515269)
@@ -1,32 +1,33 @@
 # $FreeBSD$
 
 PORTNAME=	requests-toolbelt
 DISTVERSION=	0.8.0
+PORTREVISION=	1
 CATEGORIES=	www python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	wg@FreeBSD.org
 COMMENT=	Utility belt for advanced users of python-requests
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}requests>2.0.1:www/py-requests@${PY_FLAVOR}
 
 USES=		python
-USE_PYTHON=	autoplist distutils
+USE_PYTHON=	autoplist concurrent distutils
 NO_ARCH=	yes
 PORTDOCS=	*
 
 OPTIONS_DEFINE=	DOCS
 DOCS_BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}sphinx>0:textproc/py-sphinx@${PY_FLAVOR}
 DOCS_VARS=		PYDISTUTILS_BUILD_TARGET+="build_sphinx -a -E"
 
 post-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 	@(cd ${WRKSRC}/build/sphinx/html && \
 		${COPYTREE_SHARE} . ${STAGEDIR}${DOCSDIR} \
 		"! -name .buildinfo -and ! -name objects.inv")
 
 .include <bsd.port.mk>