Index: head/devel/py-pyelftools/Makefile
===================================================================
--- head/devel/py-pyelftools/Makefile
+++ head/devel/py-pyelftools/Makefile
@@ -3,6 +3,7 @@
 
 PORTNAME=	pyelftools
 PORTVERSION=	0.24
+PORTREVISION=	1
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -15,13 +16,13 @@
 
 NO_ARCH=	yes
 USES=		python
-USE_PYTHON=	distutils autoplist
+USE_PYTHON=	distutils autoplist concurrent
 
 PORTEXAMPLES=	*
 
 OPTIONS_DEFINE=	EXAMPLES
 
-post-install-EXAMPLES-on:
+do-install-EXAMPLES-on:
 	@${MKDIR} ${STAGEDIR}${EXAMPLESDIR}
 	cd ${WRKSRC}/examples && ${COPYTREE_SHARE} . ${STAGEDIR}${EXAMPLESDIR}