diff --git a/doc/developers/contributing.rst b/doc/developers/contributing.rst
index 188a2126552dd..f91305e421497 100644
--- a/doc/developers/contributing.rst
+++ b/doc/developers/contributing.rst
@@ -448,11 +448,7 @@ You can check for common programming errors with the following tools:
 
   see also :ref:`testing_coverage`
 
-* A moderate use of type annotations is encouraged but is not mandatory. See
-  `mypy quickstart <https://mypy.readthedocs.io/en/latest/getting_started.html>`_
-  for an introduction, as well as `pandas contributing documentation
-  <https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#type-hints>`_
-  for style guidelines. Whether you add type annotation or not::
+* Run static analysis with `mypy`::
 
     mypy sklearn