diff --git a/Doc/c-api/set.rst b/Doc/c-api/set.rst
index 66b47c4..5f0ef90 100644
--- a/Doc/c-api/set.rst
+++ b/Doc/c-api/set.rst
@@ -157,3 +157,10 @@
 .. c:function:: int PySet_Clear(PyObject *set)
 
    Empty an existing set of all elements.
+
+
+.. c:function:: int PySet_ClearFreeList()
+
+   Clear the free list. Return the total number of freed items.
+
+   .. versionadded:: 3.3