diff --git a/math/py-intspan/Makefile b/math/py-intspan/Makefile
index 753e697e7647..957b34afa875 100644
--- a/math/py-intspan/Makefile
+++ b/math/py-intspan/Makefile
@@ -1,5 +1,6 @@
 PORTNAME=	intspan
 PORTVERSION=	1.6.1
+PORTREVISION=	1
 CATEGORIES=	math python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -10,8 +11,11 @@ WWW=		https://github.com/jonathaneunice/intspan
 
 LICENSE=	APACHE20
 
+BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}setuptools>=0:devel/py-setuptools@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}wheel>=0:devel/py-wheel@${PY_FLAVOR}
+
 USES=		python
-USE_PYTHON=	autoplist concurrent distutils
+USE_PYTHON=	autoplist concurrent pep517
 
 NO_ARCH=	yes