Index: head/devel/py-isort/Makefile
===================================================================
--- head/devel/py-isort/Makefile	(revision 494723)
+++ head/devel/py-isort/Makefile	(revision 494724)
@@ -1,24 +1,30 @@
 # $FreeBSD$
 
 PORTNAME=	isort
-PORTVERSION=	4.3.9
+PORTVERSION=	4.3.10
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Python utility/library to sort Python imports
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 RUN_DEPENDS=	${PY_FUTURES}
 TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}mock>=0:devel/py-mock@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pytest>=0:devel/py-pytest@${PY_FLAVOR}
 
 USES=		python
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
 
-.include <bsd.port.mk>
+.include <bsd.port.pre.mk>
+
+.if ${PYTHON_REL} < 3200
+RUN_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}backports.functools_lru_cache>=0:devel/py-backports.functools_lru_cache@${PY_FLAVOR}
+.endif
+
+.include <bsd.port.post.mk>
Index: head/devel/py-isort/distinfo
===================================================================
--- head/devel/py-isort/distinfo	(revision 494723)
+++ head/devel/py-isort/distinfo	(revision 494724)
@@ -1,3 +1,3 @@
-TIMESTAMP = 1551599054
-SHA256 (isort-4.3.9.tar.gz) = f19b23b22fb5a919a081bc31aabcc0991614c244d9215267e11abf2ca7b684ce
-SIZE (isort-4.3.9.tar.gz) = 62076
+TIMESTAMP = 1551799752
+SHA256 (isort-4.3.10.tar.gz) = 144c4295314c0ed34fb034f838b2b7e242c52dd3eafdd6f5d49078692f582c0c
+SIZE (isort-4.3.10.tar.gz) = 66339