diff --git a/devel/py-openstacksdk/Makefile b/devel/py-openstacksdk/Makefile
index c594be7d21ca..0b265292206d 100644
--- a/devel/py-openstacksdk/Makefile
+++ b/devel/py-openstacksdk/Makefile
@@ -1,38 +1,38 @@
 PORTNAME=	openstacksdk
-PORTVERSION=	4.12.0
+PORTVERSION=	4.13.0
 CATEGORIES=	devel python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	SDK for building applications to work with OpenStack
 WWW=		https://docs.openstack.org/openstacksdk/latest/ \
 		https://github.com/openstack/openstacksdk
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 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=	${PYTHON_PKGNAMEPREFIX}decorator>=4.4.1:devel/py-decorator@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}dogpile.cache>=0.6.5:devel/py-dogpile.cache@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}iso8601>=0.1.11:devel/py-iso8601@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}jmespath>=0.9.0:devel/py-jmespath@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}jsonpatch>=1.16:devel/py-jsonpatch@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}keystoneauth1>=5.10.0:devel/py-keystoneauth1@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}os-service-types>=1.8.1:devel/py-os-service-types@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pbr>=2.0.0:devel/py-pbr@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}platformdirs>=3:devel/py-platformdirs@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}psutil>=3.2.2:sysutils/py-psutil@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pyyaml>=3.13:devel/py-pyyaml@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}typing-extensions>=4.12.0:devel/py-typing-extensions@${PY_FLAVOR}
 
 USES=		python shebangfix
 USE_PYTHON=	autoplist concurrent cryptography pep517
 
 NO_ARCH=	yes
 
 SHEBANG_GLOB=	*.sh
 
 .include <bsd.port.mk>
diff --git a/devel/py-openstacksdk/distinfo b/devel/py-openstacksdk/distinfo
index f7d6536543f1..7680f3470923 100644
--- a/devel/py-openstacksdk/distinfo
+++ b/devel/py-openstacksdk/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1777311654
-SHA256 (openstacksdk-4.12.0.tar.gz) = 99b18f6854d639ec86716642efba2a1183de7280d41a4e495d0b8500e3b46692
-SIZE (openstacksdk-4.12.0.tar.gz) = 1336787
+TIMESTAMP = 1779222956
+SHA256 (openstacksdk-4.13.0.tar.gz) = ab5b0d7e3a42de3dbc78497b31b5be53abf77a962986b3a621821e07e38c69a2
+SIZE (openstacksdk-4.13.0.tar.gz) = 1341338
diff --git a/devel/py-openstacksdk/files/patch-pyproject.toml b/devel/py-openstacksdk/files/patch-pyproject.toml
new file mode 100644
index 000000000000..a78a23e3ecde
--- /dev/null
+++ b/devel/py-openstacksdk/files/patch-pyproject.toml
@@ -0,0 +1,11 @@
+--- pyproject.toml.orig	2026-05-18 09:35:04 UTC
++++ pyproject.toml
+@@ -9,7 +9,7 @@ readme = {file = "README.rst", content-type = "text/x-
+     {name = "OpenStack", email = "openstack-discuss@lists.openstack.org"},
+ ]
+ readme = {file = "README.rst", content-type = "text/x-rst"}
+-license = "Apache-2.0"
++license = {text = "Apache-2.0"}
+ dynamic = ["version", "dependencies"]
+ requires-python = ">=3.10"
+ classifiers = [