diff --git a/devel/py-oslo.policy/Makefile b/devel/py-oslo.policy/Makefile
index 4efd155c8c11..31cea7ab2772 100644
--- a/devel/py-oslo.policy/Makefile
+++ b/devel/py-oslo.policy/Makefile
@@ -1,32 +1,33 @@
 PORTNAME=	oslo.policy
-PORTVERSION=	4.5.0
+PORTVERSION=	5.1.0
 CATEGORIES=	devel python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
+DISTNAME=	oslo_policy-${PORTVERSION}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Oslo Policy library
 WWW=		https://docs.openstack.org/oslo.policy/latest/ \
 		https://github.com/openstack/oslo.policy
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pbr>=2.0.0:devel/py-pbr@${PY_FLAVOR} \
+BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pbr>=6.1.1:devel/py-pbr@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}setuptools>=0:devel/py-setuptools@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}wheel>=0:devel/py-wheel@${PY_FLAVOR}
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}oslo.config>=6.0.0:devel/py-oslo.config@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}oslo.context>=2.22.0:devel/py-oslo.context@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}oslo.i18n>=3.15.3:devel/py-oslo.i18n@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}oslo.serialization>=2.18.0:devel/py-oslo.serialization@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}oslo.utils>=3.40.0:devel/py-oslo.utils@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pyyaml>=5.1:devel/py-pyyaml@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}requests>=2.14.2:www/py-requests@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}stevedore>=1.20.0:devel/py-stevedore@${PY_FLAVOR}
 
 USES=		python
 USE_PYTHON=	autoplist concurrent pep517
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>
diff --git a/devel/py-oslo.policy/distinfo b/devel/py-oslo.policy/distinfo
index 4e3eff49e1b7..4652831069f1 100644
--- a/devel/py-oslo.policy/distinfo
+++ b/devel/py-oslo.policy/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1731679276
-SHA256 (oslo.policy-4.5.0.tar.gz) = 5ade6981f18a33c391274a2f000e1cb7b112287b3d84a794125f465062333c6a
-SIZE (oslo.policy-4.5.0.tar.gz) = 120081
+TIMESTAMP = 1779455589
+SHA256 (oslo_policy-5.1.0.tar.gz) = 382f0285836215c4dd60d453c508c2043e0b82c531177b8c05863ebb7b222834
+SIZE (oslo_policy-5.1.0.tar.gz) = 121144
diff --git a/devel/py-oslo.policy/files/patch-pyproject.toml b/devel/py-oslo.policy/files/patch-pyproject.toml
new file mode 100644
index 000000000000..24bf16e7d8fa
--- /dev/null
+++ b/devel/py-oslo.policy/files/patch-pyproject.toml
@@ -0,0 +1,11 @@
+--- pyproject.toml.orig	2026-05-18 09:17:44 UTC
++++ pyproject.toml
+@@ -9,7 +9,7 @@ authors = [
+ authors = [
+     {name = "OpenStack", email = "openstack-discuss@lists.openstack.org"},
+ ]
+-license = "Apache-2.0"
++license = {text = "Apache-2.0"}
+ requires-python = ">=3.10"
+ classifiers = [
+     "Environment :: OpenStack",