Issue #13389: Full garbage collection passes now clear the freelists for
list and dict objects.  They already cleared other freelists in the
interpreter.
diff --git a/Doc/c-api/dict.rst b/Doc/c-api/dict.rst
index 6df84e0..ac714a6 100644
--- a/Doc/c-api/dict.rst
+++ b/Doc/c-api/dict.rst
@@ -209,3 +209,10 @@
           for key, value in seq2:
               if override or key not in a:
                   a[key] = value
+
+
+.. c:function:: int PyDict_ClearFreeList()
+
+   Clear the free list. Return the total number of freed items.
+
+   .. versionadded:: 3.3