diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..5ace460
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7871a0d..b533220 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
 
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
@@ -24,10 +24,35 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
+      - name: Install tox
+        run: pip install tox
+
       - name: Run tests
-        run: STRICT_WARNINGS=1 python setup.py test
+        run: tox
 
   build-old:
+    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        python-version: ["3.6"]
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v4
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      # tox doesn't support these versions of Python anymore
+      - name: Install tox
+        run: pip install 'tox < 3'
+
+      - name: Run tests
+        run: tox
+
+
+  build-even-older:
     runs-on: ubuntu-18.04
     strategy:
       matrix:
@@ -41,10 +66,9 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
-      # Requires explicit pytz installation
-      - run: pip install pytz
-
-      - run: pip install pytz
+      # tox doesn't support these versions of Python anymore
+      - name: Install tox
+        run: pip install 'tox < 3'
 
       - name: Run tests
-        run: STRICT_WARNINGS=1 python setup.py test
+        run: tox
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..4468123
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,32 @@
+[project]
+name = "backports-datetime-fromisoformat"
+version = "2.0.0"
+authors = [
+  { name="Michael Overmeyer", email="backports@movermeyer.com" },
+]
+description = "Backport of Python 3.11's datetime.fromisoformat"
+readme = "README.rst"
+requires-python = ">3"
+license = {file = "LICENSE"}
+classifiers = [
+    'Intended Audience :: Developers',
+    'License :: OSI Approved :: MIT License',
+    'Operating System :: OS Independent',
+    'Programming Language :: Python',
+    'Programming Language :: Python :: 3',
+    'Programming Language :: Python :: 3.4',
+    'Programming Language :: Python :: 3.5',
+    'Programming Language :: Python :: 3.6',
+    'Programming Language :: Python :: 3.7',
+    'Programming Language :: Python :: 3.8',
+    'Programming Language :: Python :: 3.9',
+    'Programming Language :: Python :: 3.10',
+    'Topic :: Software Development :: Libraries :: Python Modules',
+]
+
+[project.urls]
+Homepage = "https://github.com/movermeyer/backports.datetime_fromisoformat"
+Documentation = "https://github.com/movermeyer/backports.datetime_fromisoformat"
+Repository = "https://github.com/movermeyer/backports.datetime_fromisoformat"
+"Bug Tracker" = "https://github.com/movermeyer/backports.datetime_fromisoformat/issues"
+Changelog = "https://github.com/movermeyer/backports.datetime_fromisoformat/CHANGELOG.md"
diff --git a/setup.py b/setup.py
index ee24d9e..1cdbcca 100644
--- a/setup.py
+++ b/setup.py
@@ -1,11 +1,6 @@
 import os
 
 from setuptools import setup, Extension
-# workaround for open() with encoding='' python2/3 compatibility
-from io import open
-
-with open('README.rst', encoding='utf-8') as file:
-    long_description = file.read()
 
 # We want to force all warnings to be considered errors. That way we get to catch potential issues during
 # development and at PR review time.
@@ -30,18 +25,7 @@
         os.environ["_CL_"] = ""
     os.environ["_CL_"] += " /WX"
 
-VERSION = "2.0.0"
-
 setup(
-    name="backports-datetime-fromisoformat",
-    version=VERSION,
-    description="Backport of Python 3.11's datetime.fromisoformat",
-    long_description=long_description,
-    license="MIT",
-    author="Michael Overmeyer",
-    author_email="backports@movermeyer.com",
-    url="https://github.com/movermeyer/backports.datetime_fromisoformat",
-
     packages=["backports", "backports.datetime_fromisoformat"],
 
     ext_modules=[Extension("backports._datetime_fromisoformat", [
@@ -49,24 +33,4 @@
         os.path.join("backports", "datetime_fromisoformat", "_datetimemodule.c"),
         os.path.join("backports", "datetime_fromisoformat", "timezone.c")
     ])],
-
-    test_suite='tests',
-    tests_require=[
-        'pytz'
-    ],
-    classifiers=[
-        'Intended Audience :: Developers',
-        'License :: OSI Approved :: MIT License',
-        'Operating System :: OS Independent',
-        'Programming Language :: Python',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
-        'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: 3.7',
-        'Programming Language :: Python :: 3.8',
-        'Programming Language :: Python :: 3.9',
-        'Programming Language :: Python :: 3.10',
-        'Topic :: Software Development :: Libraries :: Python Modules'
-    ]
 )
diff --git a/tests/tests.py b/tests/test_basics.py
similarity index 99%
rename from tests/tests.py
rename to tests/test_basics.py
index 05fff51..9581f02 100644
--- a/tests/tests.py
+++ b/tests/test_basics.py
@@ -626,6 +626,5 @@ def test_basic_pickle_and_copy(self):
         dt3 = copy.deepcopy(dt)
         self.assertEqual(dt, dt3)
 
-
 if __name__ == '__main__':
     unittest.main()
diff --git a/tox.ini b/tox.ini
index aac5878..e269b1e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,9 +2,10 @@
 envlist = py311,py310,py39,py38,py37,py36,py35,py34
 
 [testenv]
+package = sdist
 setenv =
     STRICT_WARNINGS = 1
 deps=
+    pytest
     pytz
-    nose
-commands=nosetests
+commands = pytest tests