diff --git a/devel/py-foolscap/Makefile b/devel/py-foolscap/Makefile
index 45837f2af988..bc7b200e8036 100644
--- a/devel/py-foolscap/Makefile
+++ b/devel/py-foolscap/Makefile
@@ -1,26 +1,27 @@
 # Created by: Kevin Lo <kevlo@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	foolscap
 PORTVERSION=	0.13.1
+PORTREVISION=	1
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	RPC protocol for Twisted Python
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}openssl>=0:security/py-openssl@${FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}twisted>=16.0.0:devel/py-twisted@${FLAVOR}
 
 NO_ARCH=	yes
 USES=		python
-USE_PYTHON=	autoplist distutils
+USE_PYTHON=	autoplist concurrent distutils
 
 do-test:
 	cd ${WRKSRC} && ${PYTHON_CMD} ${PYDISTUTILS_SETUP} test
 
 .include <bsd.port.mk>