Index: head/textproc/py-pygtail/Makefile
===================================================================
--- head/textproc/py-pygtail/Makefile	(revision 404622)
+++ head/textproc/py-pygtail/Makefile	(revision 404623)
@@ -1,16 +1,16 @@
 # Created by: Dmitry Sivachenko <demon@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	pygtail
 PORTVERSION=	0.6.1
 CATEGORIES=	textproc python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	demon@FreeBSD.org
 COMMENT=	Python module which reads log file lines that have not been read
 
 USES=		python
-USE_PYTHON=	autoplist distutils
+USE_PYTHON=	autoplist concurrent distutils
 
 .include <bsd.port.mk>