diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 352a24d..4af6e4c 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -12,12 +12,28 @@ on:
         required: true
 
 jobs:
-  build:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v5
+
+    - uses: actions/setup-python@v6
+      with:
+        python-version: '3.x'
 
+    - name: Install uv
+      uses: astral-sh/setup-uv@v6
+
+    - name: Lint
+      run: uvx flake8 --count --show-source --statistics
+
+  build:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
 
     steps:
     - name: Log reason (manual run only)
@@ -25,26 +41,22 @@ jobs:
       run: |
         echo "Reason for triggering: ${{ github.event.inputs.reason }}"
 
-    - uses: actions/checkout@v3.5.3
+    - uses: actions/checkout@v5
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4.7.0
+      uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python-version }}
 
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        python -m pip install flake8 coveralls
-        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-
-    - name: Lint with flake8
-      run: |
-        flake8 --count --show-source --statistics
+    - name: Install uv
+      uses: astral-sh/setup-uv@v6
 
     - name: Run test suite & upload coverage
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      # This will test that both source distributions and wheels work.
       run: |
-        coverage run setup.py test
-        coveralls --service=github
+        uv build
+        uv run --isolated --no-project --with dist/*.whl python -m unittest
+        uv run --isolated --no-project --with dist/*.tar.gz --with coverage coverage run -m unittest
+        uvx coveralls --service=github
diff --git a/pyproject.toml b/pyproject.toml
index 0ef3e8a..18c3e1d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,35 @@
 [build-system]
-requires = ["setuptools>=42", "wheel", "setuptools_scm[toml]>=3.4"]
+requires = ["setuptools>=80", "setuptools-scm>=8"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "ufonormalizer"
+dynamic = ["version"]
+description = "Script to normalize the XML and other data inside of a UFO."
+readme = "README.md"
+license-files = ["LICENSE.txt"]
+requires-python = ">=3.6"
+authors = [{ name = "Tal Leming", email = "tal@typesupply.com" }]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Environment :: Console",
+    "Environment :: Other Environment",
+    "Intended Audience :: Developers",
+    "Intended Audience :: End Users/Desktop",
+    "Natural Language :: English",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Topic :: Multimedia :: Graphics",
+    "Topic :: Multimedia :: Graphics :: Graphics Conversion",
+    "Topic :: Text Processing :: Fonts",
+]
+
+[project.urls]
+Homepage = "https://github.com/unified-font-object/ufoNormalizer"
+
+[project.scripts]
+ufonormalizer = "ufonormalizer:main"
 
 [tool.setuptools_scm]
 write_to = 'src/ufonormalizer/_version.py'
-write_to_template = '__version__ = "{version}"'
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 791726c..0000000
--- a/setup.cfg
+++ /dev/null
@@ -1,8 +0,0 @@
-[sdist]
-formats = zip
-
-[metadata]
-license_file = LICENSE.txt
-
-[options]
-setup_requires = setuptools_scm
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 10b1e0c..0000000
--- a/setup.py
+++ /dev/null
@@ -1,43 +0,0 @@
-from setuptools import setup, find_packages
-
-
-setup(
-    name="ufonormalizer",
-    description=("Script to normalize the XML and other data "
-                 "inside of a UFO."),
-    author="Tal Leming",
-    author_email="tal@typesupply.com",
-    url="https://github.com/unified-font-object/ufoNormalizer",
-    package_dir={"": "src"},
-    packages=find_packages(where="src"),
-    entry_points={
-        'console_scripts': [
-            "ufonormalizer = ufonormalizer:main",
-        ]
-    },
-    use_scm_version={
-        "write_to": 'src/ufonormalizer/_version.py',
-        "write_to_template": '__version__ = "{version}"',
-    },
-    setup_requires=['setuptools_scm'],
-    test_suite="tests",
-    license="OpenSource, BSD-style",
-    platforms=["Any"],
-    classifiers=[
-        "Development Status :: 5 - Production/Stable",
-        "Environment :: Console",
-        "Environment :: Other Environment",
-        "Intended Audience :: Developers",
-        "Intended Audience :: End Users/Desktop",
-        "License :: OSI Approved :: BSD License",
-        "Natural Language :: English",
-        "Operating System :: OS Independent",
-        "Programming Language :: Python",
-        "Programming Language :: Python :: 3",
-        "Topic :: Text Processing :: Fonts",
-        "Topic :: Multimedia :: Graphics",
-        "Topic :: Multimedia :: Graphics :: Graphics Conversion",
-    ],
-    python_requires='>=3.6',
-    zip_safe=True,
-)
diff --git a/src/ufonormalizer/__init__.py b/src/ufonormalizer/__init__.py
index 2c8b5c5..ee45a31 100644
--- a/src/ufonormalizer/__init__.py
+++ b/src/ufonormalizer/__init__.py
@@ -91,9 +91,9 @@ def main(args=None):
     outputPath = args.output
     onlyModified = not args.all
     if not os.path.exists(inputPath):
-        parser.error(f'Input path does not exist: "{ inputPath }".')
+        parser.error(f'Input path does not exist: "{inputPath}".')
     if os.path.splitext(inputPath)[-1].lower() != ".ufo":
-        parser.error(f'Input path is not a UFO: "{ inputPath }".')
+        parser.error(f'Input path is not a UFO: "{inputPath}".')
 
     if args.float_precision >= 0:
         floatPrecision = args.float_precision