Index: head/devel/py-grpcio/Makefile
===================================================================
--- head/devel/py-grpcio/Makefile	(revision 503872)
+++ head/devel/py-grpcio/Makefile	(revision 503873)
@@ -1,34 +1,34 @@
 # Created by: vanilla@
 # $FreeBSD$
 
 PORTNAME=	grpcio
-PORTVERSION=	1.20.1
+PORTVERSION=	1.21.1
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	vanilla@FreeBSD.org
 COMMENT=	HTTP/2-based RPC framework
 
 LICENSE=	APACHE20
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}six>1:devel/py-six@${PY_FLAVOR} \
 		${PY_ENUM34} \
 		${PY_FUTURES} \
 		${PYTHON_PKGNAMEPREFIX}protobuf>=3:devel/py-protobuf@${PY_FLAVOR}
 LIB_DEPENDS=	libcares.so:dns/c-ares
 
-USES=		compiler:gcc-c++11-lib localbase:ldflags python
+USES=		compiler:c++11-lib localbase:ldflags python
 USE_PYTHON=	autoplist distutils
 MAKE_ENV+=	GRPC_PYTHON_BUILD_SYSTEM_ZLIB=true \
 		GRPC_PYTHON_BUILD_SYSTEM_CARES=true
 CFLAGS+=	-Ithird_party/boringssl/include
 CFLAGS_powerpc64=	-maltivec -mvsx
 CFLAGS_powerpc=	-maltivec
 LDFLAGS+=	-lcares
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}/grpc/_cython/cygrpc.so
 	${REINPLACE_CMD} -e 's|${PYTHONPREFIX_SITELIBDIR}/\(.*\)/grpcio/grpc/_cython/cygrpc.so|${PYTHONPREFIX_SITELIBDIR}/grpc/_cython/cygrpc.so|g' ${_PYTHONPKGLIST}
 
 .include <bsd.port.mk>
Index: head/devel/py-grpcio/distinfo
===================================================================
--- head/devel/py-grpcio/distinfo	(revision 503872)
+++ head/devel/py-grpcio/distinfo	(revision 503873)
@@ -1,3 +1,3 @@
-TIMESTAMP = 1556284695
-SHA256 (grpcio-1.20.1.tar.gz) = 84eb47b1a47e206e78f453fb92a155ed0d18d2ca8747f5c67e4b50b9c37180a7
-SIZE (grpcio-1.20.1.tar.gz) = 13882426
+TIMESTAMP = 1560136986
+SHA256 (grpcio-1.21.1.tar.gz) = fb98dbfee0d963b49ae5754554028cf62e6bd695f22de16d242ba9d2f0b7339b
+SIZE (grpcio-1.21.1.tar.gz) = 13919484