Index: head/devel/ipython/Makefile
===================================================================
--- head/devel/ipython/Makefile	(revision 462383)
+++ head/devel/ipython/Makefile	(revision 462384)
@@ -1,56 +1,57 @@
 # Created by: Dryice Liu
 # $FreeBSD$
 
 PORTNAME=	ipython
 PORTVERSION=	5.5.0
+PORTREVISION=	1
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	python@FreeBSD.org
 COMMENT=	Enhanced Interactive Python shell
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/COPYING.rst
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pexpect>=0:misc/py-pexpect@${FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}sqlite3>=2:databases/py-sqlite3@${FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}decorator>=0:devel/py-decorator@${FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pickleshare>=0:databases/py-pickleshare@${FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}prompt_toolkit>=1.0.4:devel/py-prompt_toolkit@${FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pygments>=0:textproc/py-pygments@${FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}simplegeneric>0.8:devel/py-simplegeneric@${FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}traitlets>=4.2:devel/py-traitlets@${FLAVOR}
 
 USES=		python
-USE_PYTHON=	autoplist distutils
+USE_PYTHON=	autoplist concurrent distutils
 USE_GCC=	yes # To be removed - Needed as a work-around for numpy, see PR ports/188114
 NO_ARCH=	yes
 
 OPTIONS_DEFINE=	EXAMPLES
 PORTEXAMPLES=	*
 
 .include <bsd.port.pre.mk>
 
 .if ${PYTHON_REL} < 3000
 RUN_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}backports.shutil_get_terminal_size>=0:devel/py-backports.shutil_get_terminal_size@${FLAVOR}
 .endif
 .if ${PYTHON_REL} < 3400
 RUN_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}pathlib2>=0:devel/py-pathlib2@${FLAVOR}
 .endif
 
 post-install:
 	@${ECHO_CMD} "/EASY-INSTALL"	> ${WRKDIR}/ex.script
 	@${ECHO_CMD} "a"		>> ${WRKDIR}/ex.script
 	@${ECHO_CMD} "import os"	>> ${WRKDIR}/ex.script
 	@${ECHO_CMD} "os.environ[\"LD_LIBRARY_PATH\"]=\"${_GCC_RUNTIME}\"" >> ${WRKDIR}/ex.script
 	@${ECHO_CMD} "."		>> ${WRKDIR}/ex.script
 	@${ECHO_CMD} "x!"		>> ${WRKDIR}/ex.script
 	@for file in ${STAGEDIR}${PREFIX}/bin/*; do \
 		ex $${file} < ${WRKDIR}/ex.script > /dev/null; \
 	done
 
 post-install-EXAMPLES-on:
 	cd ${WRKSRC}/examples && ${COPYTREE_SHARE} . ${STAGEDIR}${EXAMPLESDIR}
 
 .include <bsd.port.post.mk>