diff --git a/Doc/library/json.rst b/Doc/library/json.rst
index 6d4497f..218bf9b 100644
--- a/Doc/library/json.rst
+++ b/Doc/library/json.rst
@@ -217,8 +217,8 @@
    (e.g. :class:`float`).
 
    *parse_constant*, if specified, will be called with one of the following
-   strings: ``'-Infinity'``, ``'Infinity'``, ``'NaN'``, ``'null'``, ``'true'``,
-   ``'false'``.  This can be used to raise an exception if invalid JSON numbers
+   strings: ``'-Infinity'``, ``'Infinity'``, ``'NaN'``.
+   This can be used to raise an exception if invalid JSON numbers
    are encountered.
 
    To use a custom :class:`JSONDecoder` subclass, specify it with the ``cls``