Index: head/devel/py-pybind11/Makefile
===================================================================
--- head/devel/py-pybind11/Makefile	(revision 559207)
+++ head/devel/py-pybind11/Makefile	(revision 559208)
@@ -1,20 +1,21 @@
 # Created by: Yuri Victorovich <yuri@rawbw.com>
 # $FreeBSD$
 
 PORTNAME=	pybind11
 DISTVERSION=	2.6.1
+PORTREVISION=	1
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Seamless interoperability between C++11 and Python
 
 LICENSE=	BSD3CLAUSE
 
 USES=		python
-USE_PYTHON=	autoplist distutils
+USE_PYTHON=	distutils concurrent autoplist
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>