diff --git a/MdePkg/Include/Register/Amd/Ghcb.h b/MdePkg/Include/Register/Amd/Ghcb.h
index e7626a2c13..dab396f3ed 100644
--- a/MdePkg/Include/Register/Amd/Ghcb.h
+++ b/MdePkg/Include/Register/Amd/Ghcb.h
@@ -24,7 +24,7 @@
 #define VC_EXCEPTION  29
 
 #define GHCB_VERSION_MIN  1
-#define GHCB_VERSION_MAX  1
+#define GHCB_VERSION_MAX  2
 
 #define GHCB_STANDARD_USAGE  0