diff --git a/devel/py-os-service-types/Makefile b/devel/py-os-service-types/Makefile
index fe01109986ac..b0a88e7059d2 100644
--- a/devel/py-os-service-types/Makefile
+++ b/devel/py-os-service-types/Makefile
@@ -1,26 +1,26 @@
 PORTNAME=	os-service-types
-DISTVERSION=	1.8.2
+DISTVERSION=	1.9.0
 CATEGORIES=	devel python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 DISTNAME=	os_service_types-${DISTVERSION}
 
 MAINTAINER=	kai@FreeBSD.org
 COMMENT=	Python library for consuming OpenStack service-types-authority data
 WWW=		https://pypi.org/project/os-service-types/
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	${PY_SETUPTOOLS} \
 		${PYTHON_PKGNAMEPREFIX}pbr>=6.1.1:devel/py-pbr@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}wheel>0:devel/py-wheel@${PY_FLAVOR}
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pbr>=2.0.0:devel/py-pbr@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}typing-extensions>=4.1.0:devel/py-typing-extensions@${PY_FLAVOR}
 
-USES=		python
+USES=		python:3.11+
 USE_PYTHON=	autoplist pep517
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>
diff --git a/devel/py-os-service-types/distinfo b/devel/py-os-service-types/distinfo
index 2607f903a549..0475b566a6a6 100644
--- a/devel/py-os-service-types/distinfo
+++ b/devel/py-os-service-types/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1763897451
-SHA256 (os_service_types-1.8.2.tar.gz) = ab7648d7232849943196e1bb00a30e2e25e600fa3b57bb241d15b7f521b5b575
-SIZE (os_service_types-1.8.2.tar.gz) = 27476
+TIMESTAMP = 1787939690
+SHA256 (os_service_types-1.9.0.tar.gz) = 1f2e5fb71d1f6f4ff31d8992674f2368465bc2f25cd94018015c3ddbfc5c617f
+SIZE (os_service_types-1.9.0.tar.gz) = 28087
diff --git a/devel/py-os-service-types/files/patch-pyproject.toml b/devel/py-os-service-types/files/patch-pyproject.toml
new file mode 100644
index 000000000000..7df444e73694
--- /dev/null
+++ b/devel/py-os-service-types/files/patch-pyproject.toml
@@ -0,0 +1,13 @@
+Enable build with older versions of py-setuptools.
+
+--- pyproject.toml.orig	2026-08-28 22:37:50 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 = ">=3.11"
+ classifiers = [