diff --git a/.docker/Dockerfile b/.docker/Dockerfile
index f5fcd51d..313f252a 100644
--- a/.docker/Dockerfile
+++ b/.docker/Dockerfile
@@ -79,7 +79,7 @@ COPY --from=builder /app/misc/webservice.py /app/
 COPY --from=builder /app/misc/watcher.py /app/
 
 # Copy minimal project files to get the test suite.
-COPY --from=builder /app/setup.cfg /app/setup.py /app/README.md /app/
+COPY --from=builder /app/pyproject.toml /app/README.md /app/
 COPY --from=builder /app/tests /app/tests
 
 ENTRYPOINT ["/usr/local/bin/ocrmypdf"]
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f9a15f41..bc02d363 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -224,9 +224,8 @@ jobs:
 
       - name: Make wheels and sdist
         run: |
-          python -m pip install --upgrade pip wheel
-          python setup.py sdist
-          python setup.py bdist_wheel
+          python -m pip install --upgrade pip wheel build
+          python -m build --sdist --wheel
 
       - uses: actions/upload-artifact@v3
         with:
diff --git a/docs/plugins.rst b/docs/plugins.rst
index def6e444..da8df5ac 100644
--- a/docs/plugins.rst
+++ b/docs/plugins.rst
@@ -76,20 +76,16 @@ Setuptools plugins
 You can also create a plugin that OCRmyPDF will always automatically load if both are
 installed in the same virtual environment, using a setuptools entrypoint.
 
-Your package's ``setup.py`` would need to contain the following, for a plugin
+Your package's ``pyproject.toml`` would need to contain the following, for a plugin
 named ``ocrmypdf-exampleplugin``:
 
-.. code-block:: python
+.. code-block:: toml
 
-    # sample ./setup.py file
-    from setuptools import setup
+    [project]
+    name = "ocrmypdf-exampleplugin"
 
-    setup(
-        name="ocrmypdf-exampleplugin",
-        packages=["exampleplugin"],
-        # the following makes a plugin available to pytest
-        entry_points={"ocrmypdf": ["exampleplugin = exampleplugin.pluginmodule"]},
-    )
+    [project.entry-points."ocrmypdf"]
+    exampleplugin = "exampleplugin.pluginmodule"
 
 .. code-block:: ini
 
diff --git a/setup.py b/setup.py
deleted file mode 100644
index afa8ba3f..00000000
--- a/setup.py
+++ /dev/null
@@ -1,10 +0,0 @@
-# SPDX-FileCopyrightText: 2022 James R. Barlow
-# SPDX-License-Identifier: MPL-2.0
-
-"""setup.py to support older setuptools and pip."""
-
-from __future__ import annotations
-
-from setuptools import setup
-
-setup()