diff --git a/Include/frameobject.h b/Include/frameobject.h
index 794f651..297b66d 100644
--- a/Include/frameobject.h
+++ b/Include/frameobject.h
@@ -75,6 +75,8 @@
 PyAPI_FUNC(void) PyFrame_LocalsToFast(PyFrameObject *, int);
 PyAPI_FUNC(void) PyFrame_FastToLocals(PyFrameObject *);
 
+PyAPI_FUNC(int) PyFrame_ClearFreeList(void);
+
 #ifdef __cplusplus
 }
 #endif