diff --git a/mail/py-flanker/Makefile b/mail/py-flanker/Makefile
index ea53af039187..85766fa0e063 100644
--- a/mail/py-flanker/Makefile
+++ b/mail/py-flanker/Makefile
@@ -1,5 +1,6 @@
 PORTNAME=	flanker
 PORTVERSION=	0.9.11
+PORTREVISION=	1
 CATEGORIES=	mail python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -11,6 +12,8 @@ WWW=		https://github.com/mailgun/flanker
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}setuptools>=0:devel/py-setuptools@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}wheel>=0:devel/py-wheel@${PY_FLAVOR}
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}attrs>=0:devel/py-attrs@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}chardet>=1.0.1,1:textproc/py-chardet@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}idna>=2.5:dns/py-idna@${PY_FLAVOR} \
@@ -21,7 +24,7 @@ RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}attrs>=0:devel/py-attrs@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}webob>=0.9.8:www/py-webob@${PY_FLAVOR}
 
 USES=		python
-USE_PYTHON=	autoplist concurrent cryptography distutils
+USE_PYTHON=	autoplist concurrent cryptography pep517
 
 NO_ARCH=	yes