diff --git a/MdePkg/Include/Pi/PiHob.h b/MdePkg/Include/Pi/PiHob.h
index e928f5fbb0..2df710bbe0 100644
--- a/MdePkg/Include/Pi/PiHob.h
+++ b/MdePkg/Include/Pi/PiHob.h
@@ -30,6 +30,7 @@
 #define EFI_HOB_TYPE_MEMORY_POOL          0x0007
 #define EFI_HOB_TYPE_FV2                  0x0009
 #define EFI_HOB_TYPE_LOAD_PEIM            0x000A
+#define EFI_HOB_TYPE_UEFI_CAPSULE         0x000B
 #define EFI_HOB_TYPE_UNUSED               0xFFFE
 #define EFI_HOB_TYPE_END_OF_HOB_LIST      0xFFFF