diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index bd7bee33..12b8bb5e 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
       - uses: actions/checkout@v5
diff --git a/pyproject.toml b/pyproject.toml
index 6fb6103a..f3e09f7c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,19 +6,21 @@ build-backend = "setuptools.build_meta"
 name = "lsst-utils"
 requires-python = ">=3.10.0"
 description = "Utility functions from Rubin Observatory Data Management for the Legacy Survey of Space and Time (LSST)."
-license = {text = "BSD 3-Clause License"}
+license = "BSD-3-Clause"
+license-files = ["COPYRIGHT", "LICENSE"]
 readme = "README.rst"
 authors = [
     {name="Rubin Observatory Data Management", email="dm-admin@lists.lsst.org"},
 ]
 classifiers = [
     "Intended Audience :: Developers",
-    "License :: OSI Approved :: BSD License",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
 ]
 keywords=["lsst"]
 dependencies = [
@@ -47,7 +49,6 @@ where = ["python"]
 
 [tool.setuptools]
 zip-safe = true
-license-files = ["COPYRIGHT", "LICENSE"]
 
 [tool.setuptools.package-data]
 "lsst.utils" = ["py.typed"]
diff --git a/python/lsst/utils/packages.py b/python/lsst/utils/packages.py
index 6400f071..5cb3da4a 100644
--- a/python/lsst/utils/packages.py
+++ b/python/lsst/utils/packages.py
@@ -780,7 +780,11 @@ def _pkg_constructor(loader: yaml.constructor.SafeConstructor, node: yaml.Node)
     yield Packages(loader.construct_mapping(node, deep=True))  # type: ignore
 
 
-for loader in (yaml.Loader, yaml.CLoader, yaml.UnsafeLoader, yaml.SafeLoader, yaml.FullLoader):
+for loader_str in ("Loader", "CLoader", "UnsafeLoader", "SafeLoader", "FullLoader"):
+    loader = getattr(yaml, loader_str, None)
+    if loader is None:
+        continue
+
     yaml.add_constructor("lsst.utils.packages.Packages", _pkg_constructor, Loader=loader)
 
     # Register the old name with YAML.