diff --git a/doc/src/plugins/backend.rst b/doc/src/plugins/backend.rst
index 22a0863..1b9f367 100644
--- a/doc/src/plugins/backend.rst
+++ b/doc/src/plugins/backend.rst
@@ -13,21 +13,6 @@ Lockfile configuration
 Your lockfile must be configured with the ``include_metadata`` strategy (``pdm>=2.11``) and include locks for the
 optional-dependencies groups you want to publish locked.
 
-
-pyproject configuration
-=======================
-
-If you already have a ``[project.optional-dependencies]`` section, **skip this step**.
-
-Else, add the following to the start of your ``pyproject.toml``:
-
-.. code-block:: toml
-    :caption: pyproject.toml
-
-    [project]
-    dynamic = ["optional-dependencies"]
-
-
 buildsystem configuration
 =========================