diff --git a/xen/include/public/sysctl.h b/xen/include/public/sysctl.h
index 220e8d8beb..e717cdc9b6 100644
--- a/xen/include/public/sysctl.h
+++ b/xen/include/public/sysctl.h
@@ -34,7 +34,7 @@
 #include "xen.h"
 #include "domctl.h"
 
-#define XEN_SYSCTL_INTERFACE_VERSION 0x00000008
+#define XEN_SYSCTL_INTERFACE_VERSION 0x00000009
 
 /*
  * Read console content from Xen buffer ring.