diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 7eb7355..bd46cb7 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -8,17 +8,17 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python 3.8
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: 3.8
     - name: Install build dependencies
       run: |
-        python -m pip install --upgrade pip wheel
+        python -m pip install --upgrade pip wheel build
     - name: Build package
       run: |
-        python setup.py sdist bdist_wheel
+        python -m build
     - name: Publish a Python distribution to PyPI
       uses: pypa/gh-action-pypi-publish@v1.4.1
       with:
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 425eeff..7429365 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -11,17 +11,17 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: [3.7, 3.8, 3.9, '3.10', '3.11']
+        python-version: [3.8, 3.9, '3.10', '3.11', '3.12', '3.13']
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install test dependencies
       run: |
-        python -m pip install --upgrade pip wheel
+        python -m pip install --upgrade pip wheel build
         python -m pip install -r requirements-dev.txt
     - name: Temporary installation
       run: python -m pip install -e .
@@ -33,7 +33,7 @@ jobs:
         mypy docstring_to_markdown
     - name: Build package
       run: |
-        python setup.py sdist bdist_wheel
+        python -m build
     - name: Install package
       run: python -m pip install --find-links=dist --no-index --ignore-installed docstring_to_markdown
     - name: Pip check
diff --git a/README.md b/README.md
index 7d7f45f..94231e4 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 On the fly conversion of Python docstrings to markdown
 
-- Python 3.6+ (tested on 3.7 up to 3.11)
+- Python 3.6+ (tested on 3.8 up to 3.13)
 - can recognise reStructuredText and convert multiple of its features to Markdown
 - since v0.13 includes initial support for Google-formatted docstrings
 
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..fed528d
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 76d0c2c..d6df770 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,5 +1,5 @@
 pytest
 pytest-cov
 pytest-flake8
-flake8<5
+flake8
 mypy