diff --git a/MdeModulePkg/Include/UniversalPayload/SerialPortInfo.h b/MdeModulePkg/Include/UniversalPayload/SerialPortInfo.h
index 3c4459e2c0325..f5722dc01fd6b 100644
--- a/MdeModulePkg/Include/UniversalPayload/SerialPortInfo.h
+++ b/MdeModulePkg/Include/UniversalPayload/SerialPortInfo.h
@@ -20,10 +20,11 @@ typedef struct {
   UINT8                               RegisterStride;
   UINT32                              BaudRate;
   EFI_PHYSICAL_ADDRESS                RegisterBase;
+  UINT32                              ClockRate;
 } UNIVERSAL_PAYLOAD_SERIAL_PORT_INFO;
 #pragma pack()
 
-#define UNIVERSAL_PAYLOAD_SERIAL_PORT_INFO_REVISION  1
+#define UNIVERSAL_PAYLOAD_SERIAL_PORT_INFO_REVISION  2
 
 extern GUID  gUniversalPayloadSerialPortInfoGuid;