Index: head/devel/py-fs/Makefile
===================================================================
--- head/devel/py-fs/Makefile	(revision 510378)
+++ head/devel/py-fs/Makefile	(revision 510379)
@@ -1,21 +1,22 @@
 # Created by: Douglas Thrift <douglas@douglasthrift.net>
 # $FreeBSD$
 
 PORTNAME=	fs
 PORTVERSION=	0.5.4
+PORTREVISION=	1
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	douglas@douglasthrift.net
 COMMENT=	Python filesystem abstraction
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 USES=		python
-USE_PYTHON=	autoplist distutils
+USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>