diff --git a/docs/random-numbers.rst b/docs/random-numbers.rst
index 8c6b9fd..c6acd5b 100644
--- a/docs/random-numbers.rst
+++ b/docs/random-numbers.rst
@@ -29,4 +29,9 @@
 
     >>> serial = int.from_bytes(os.urandom(20), byteorder="big")
 
+Starting with Python 3.6 the `standard library includes`_ the ``secrets``
+module, which can be used for generating cryptographically secure random
+numbers, with specific helpers for text-based formats.
+
 .. _`always use your operating system's provided random number generator`: https://sockpuppet.org/blog/2014/02/25/safely-generate-random-numbers/
+.. _`standard library includes`: https://docs.python.org/3/library/secrets.html