diff --git a/Include/pystate.h b/Include/pystate.h
index e02df88..81de569 100644
--- a/Include/pystate.h
+++ b/Include/pystate.h
@@ -113,6 +113,8 @@
 PyAPI_FUNC(PyObject*) PyState_FindModule(struct PyModuleDef*);
 
 PyAPI_FUNC(PyThreadState *) PyThreadState_New(PyInterpreterState *);
+PyAPI_FUNC(PyThreadState *) _PyThreadState_Prealloc(PyInterpreterState *);
+PyAPI_FUNC(void) _PyThreadState_Init(PyThreadState *);
 PyAPI_FUNC(void) PyThreadState_Clear(PyThreadState *);
 PyAPI_FUNC(void) PyThreadState_Delete(PyThreadState *);
 #ifdef WITH_THREAD