diff --git a/changelog/10721.doc.rst b/changelog/10721.doc.rst
new file mode 100644
index 00000000000..8b8fecf1546
--- /dev/null
+++ b/changelog/10721.doc.rst
@@ -0,0 +1 @@
+Document PEP 621 ``pyproject.toml`` entry point format for ``pytest11`` plugins in plugin writing guide.
diff --git a/doc/en/how-to/writing_plugins.rst b/doc/en/how-to/writing_plugins.rst
index 17823098d0c..55df2e270f5 100644
--- a/doc/en/how-to/writing_plugins.rst
+++ b/doc/en/how-to/writing_plugins.rst
@@ -215,7 +215,14 @@ as plugins.  As an example consider the following package::
    pytest_foo/plugin.py
    pytest_foo/helper.py
 
-With the following typical ``setup.py`` extract:
+With the following typical ``pyproject.toml`` extract:
+
+.. code-block:: toml
+
+   [project.entry-points.pytest11]
+   foo = "pytest_foo.plugin"
+
+Or with a legacy ``setup.py`` extract:
 
 .. code-block:: python