diff --git a/devel/py-google-cloud-iam/Makefile b/devel/py-google-cloud-iam/Makefile
index 33780d2a63eb..145eff048267 100644
--- a/devel/py-google-cloud-iam/Makefile
+++ b/devel/py-google-cloud-iam/Makefile
@@ -1,28 +1,28 @@
 PORTNAME=	google-cloud-iam
-PORTVERSION=	2.15.0
+PORTVERSION=	2.15.1
 CATEGORIES=	devel python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	IAM Service Account Credentials API client library
 WWW=		https://github.com/googleapis/google-cloud-python/tree/main/packages/google-cloud-iam \
 		https://github.com/googleapis/google-cloud-python
 
 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=	${PYTHON_PKGNAMEPREFIX}google-api-core>=2.10.0<3.0.0:www/py-google-api-core@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}google-auth>=2.14.1<3.0.0:security/py-google-auth@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}grpc-google-iam-v1>=0.12.4<1.0.0:devel/py-grpc-google-iam-v1@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}proto-plus>=1.22.3<2.0.0:devel/py-proto-plus@${PY_FLAVOR} \
-		${PYTHON_PKGNAMEPREFIX}protobuf>=4.21.6,1<5.0.0,1:devel/py-protobuf@${PY_FLAVOR}
+		${PYTHON_PKGNAMEPREFIX}protobuf>=4.21.6,1<6.0.0,1:devel/py-protobuf@${PY_FLAVOR}
 
 USES=		python
 USE_PYTHON=	autoplist concurrent pep517
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>
diff --git a/devel/py-google-cloud-iam/distinfo b/devel/py-google-cloud-iam/distinfo
index 0bba02101425..62f9fbd5ed31 100644
--- a/devel/py-google-cloud-iam/distinfo
+++ b/devel/py-google-cloud-iam/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1713528530
-SHA256 (google-cloud-iam-2.15.0.tar.gz) = e9381a1823e5162f68c28048ff1a307ba3a0e538daf607ad7d41cfe3b756a6f0
-SIZE (google-cloud-iam-2.15.0.tar.gz) = 214917
+TIMESTAMP = 1720536494
+SHA256 (google-cloud-iam-2.15.1.tar.gz) = a24084d7ef187d003fb506738481447c4c95db124214efe4912b30c0c7de8dd8
+SIZE (google-cloud-iam-2.15.1.tar.gz) = 223747