diff --git a/Include/tupleobject.h b/Include/tupleobject.h
index 1b51b1b..58479ee 100644
--- a/Include/tupleobject.h
+++ b/Include/tupleobject.h
@@ -52,6 +52,8 @@
 /* Macro, *only* to be used to fill in brand new tuples */
 #define PyTuple_SET_ITEM(op, i, v) (((PyTupleObject *)(op))->ob_item[i] = v)
 
+PyAPI_FUNC(int) PyTuple_ClearFreeList(void);
+
 #ifdef __cplusplus
 }
 #endif