Allow set literals in literal_eval().
diff --git a/Doc/library/ast.rst b/Doc/library/ast.rst
index 9bf374f..43c9add 100644
--- a/Doc/library/ast.rst
+++ b/Doc/library/ast.rst
@@ -119,12 +119,15 @@
 
    Safely evaluate an expression node or a string containing a Python
    expression.  The string or node provided may only consist of the following
-   Python literal structures: strings, numbers, tuples, lists, dicts, booleans,
-   and ``None``.
+   Python literal structures: strings, numbers, tuples, lists, dicts, sets,
+   booleans, and ``None``.
 
    This can be used for safely evaluating strings containing Python expressions
    from untrusted sources without the need to parse the values oneself.
 
+   .. versionchanged:: 3.2
+      Now allows set literals.
+
 
 .. function:: get_docstring(node, clean=True)