Index: Makefile
===================================================================
--- Makefile	(revision 515087)
+++ Makefile	(working copy)
@@ -3,6 +3,7 @@
 
 PORTNAME=	scapy
 PORTVERSION=	2.4.3
+PORTREVISION=	1
 CATEGORIES=	net python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -16,7 +17,7 @@
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}libdnet>0:net/py-libdnet@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pypcap>0:net/py-pypcap@${PY_FLAVOR}
 
-USE_PYTHON=	autoplist distutils
+USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes