diff --git a/Include/pythonrun.h b/Include/pythonrun.h
index f2105b8..a4dd914 100644
--- a/Include/pythonrun.h
+++ b/Include/pythonrun.h
@@ -123,6 +123,7 @@
 PyAPI_FUNC(int) _PyFrame_Init(void);
 PyAPI_FUNC(int) _PyInt_Init(void);
 PyAPI_FUNC(void) _PyFloat_Init(void);
+PyAPI_FUNC(int) PyBytes_Init(void);
 
 /* Various internal finalizers */
 PyAPI_FUNC(void) _PyExc_Fini(void);
@@ -138,6 +139,7 @@
 PyAPI_FUNC(void) PyInt_Fini(void);
 PyAPI_FUNC(void) PyFloat_Fini(void);
 PyAPI_FUNC(void) PyOS_FiniInterrupts(void);
+PyAPI_FUNC(void) PyBytes_Fini(void);
 
 /* Stuff with no proper home (yet) */
 PyAPI_FUNC(char *) PyOS_Readline(FILE *, FILE *, char *);