diff --git a/README.rst b/README.rst
index 61e5a66ae..8624129de 100644
--- a/README.rst
+++ b/README.rst
@@ -19,7 +19,8 @@ Installation
 ~~~~~~~~~~~~
 
 FontTools requires `Python <http://www.python.org/download/>`__ 3.7
-or later.
+or later. We try to follow the same schedule of minimum Python version support as
+NumPy (see `NEP 29 <https://numpy.org/neps/nep-0029-deprecation_policy.html>`__).
 
 The package is listed in the Python Package Index (PyPI), so you can
 install it with `pip <https://pip.pypa.io>`__: