diff --git a/www/py-google-api-core/Makefile b/www/py-google-api-core/Makefile
index c358c0ae999c..02dece1bf59a 100644
--- a/www/py-google-api-core/Makefile
+++ b/www/py-google-api-core/Makefile
@@ -1,36 +1,38 @@
 PORTNAME=	google-api-core
 PORTVERSION=	2.25.1
 CATEGORIES=	www python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 DISTNAME=	google_api_core-${PORTVERSION}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Core Google API Client Library
 WWW=		https://github.com/googleapis/python-api-core
 
 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=	${PYTHON_PKGNAMEPREFIX}google-auth>=2.14.1<3.0.0:security/py-google-auth@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}googleapis-common-protos>=1.56.2<2.0.0:devel/py-googleapis-common-protos@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}proto-plus>=1.25.0<2.0.0:devel/py-proto-plus@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}protobuf>=4.21.6,1<7.0.0,1:devel/py-protobuf@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}requests>=2.18.0<3.0.0:www/py-requests@${PY_FLAVOR}
 
 USES=		python
 USE_PYTHON=	autoplist concurrent pep517
 
 NO_ARCH=	yes
 
-OPTIONS_DEFINE=	GRPC GRPCGCP
-OPTIONS_DEFAULT=GRPC
+OPTIONS_DEFINE=	ASYNC_REST GRPC GRPCGCP
+OPTIONS_DEFAULT=ASYNC_REST GRPC
+ASYNC_REST_DESC=Asynchronous REST support
 GRPCGCP_DESC=	gRPC support for Google Cloud Platform
 
+ASYNC_REST_RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}google-auth>=2.35.0<3.0.0:security/py-google-auth@${PY_FLAVOR}
 GRPC_RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}grpcio>=1.49.1<2.0.0:devel/py-grpcio@${PY_FLAVOR} \
 			${PYTHON_PKGNAMEPREFIX}grpcio-status>=1.49.1<2.0.0:devel/py-grpcio-status@${PY_FLAVOR}
 GRPCGCP_RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}grpcio-gcp>=0.2.2<1.0.0:devel/py-grpcio-gcp@${PY_FLAVOR}
 
 .include <bsd.port.mk>