do not expose known hash api in stable API
diff --git a/Include/dictobject.h b/Include/dictobject.h
index 3e0544a..09dff59 100644
--- a/Include/dictobject.h
+++ b/Include/dictobject.h
@@ -50,8 +50,10 @@
 
 PyAPI_FUNC(PyObject *) PyDict_New(void);
 PyAPI_FUNC(PyObject *) PyDict_GetItem(PyObject *mp, PyObject *key);
+#ifndef Py_LIMITED_API
 PyAPI_FUNC(PyObject *) _PyDict_GetItem_KnownHash(PyObject *mp, PyObject *key,
                                        Py_hash_t hash);
+#endif
 PyAPI_FUNC(PyObject *) PyDict_GetItemWithError(PyObject *mp, PyObject *key);
 PyAPI_FUNC(PyObject *) _PyDict_GetItemIdWithError(PyObject *dp,
                                                   struct _Py_Identifier *key);
@@ -60,8 +62,10 @@
     PyObject *mp, PyObject *key, PyObject *defaultobj);
 #endif
 PyAPI_FUNC(int) PyDict_SetItem(PyObject *mp, PyObject *key, PyObject *item);
+#ifndef Py_LIMITED_API
 PyAPI_FUNC(int) _PyDict_SetItem_KnownHash(PyObject *mp, PyObject *key,
                                           PyObject *item, Py_hash_t hash);
+#endif
 PyAPI_FUNC(int) PyDict_DelItem(PyObject *mp, PyObject *key);
 PyAPI_FUNC(void) PyDict_Clear(PyObject *mp);
 PyAPI_FUNC(int) PyDict_Next(