diff --git a/MdePkg/Include/Pi/PiDxeCis.h b/MdePkg/Include/Pi/PiDxeCis.h
index 75f1736410..04a7bcb9ac 100644
--- a/MdePkg/Include/Pi/PiDxeCis.h
+++ b/MdePkg/Include/Pi/PiDxeCis.h
@@ -655,7 +655,7 @@ EFI_STATUS
 // DXE Services Table
 //
 #define DXE_SERVICES_SIGNATURE  0x565245535f455844ULL
-#define DXE_SERVICES_REVISION   ((1<<16) | (00))
+#define DXE_SERVICES_REVISION   ((1<<16) | (20))
 
 typedef struct {
   ///
diff --git a/MdePkg/Include/Pi/PiPeiCis.h b/MdePkg/Include/Pi/PiPeiCis.h
index 96bd78dec0..6fba4f747f 100644
--- a/MdePkg/Include/Pi/PiPeiCis.h
+++ b/MdePkg/Include/Pi/PiPeiCis.h
@@ -700,7 +700,7 @@ EFI_STATUS
 // PEI Specification Revision information
 //
 #define PEI_SPECIFICATION_MAJOR_REVISION  1
-#define PEI_SPECIFICATION_MINOR_REVISION  0
+#define PEI_SPECIFICATION_MINOR_REVISION  20
 ///
 /// Inconsistent with specification here: 
 /// In PI1.0 spec, PEI_SERVICES_SIGNATURE is defined as 0x5652455320494550. But 
diff --git a/MdePkg/Include/Uefi/UefiSpec.h b/MdePkg/Include/Uefi/UefiSpec.h
index c8c3a6c303..f523246c55 100644
--- a/MdePkg/Include/Uefi/UefiSpec.h
+++ b/MdePkg/Include/Uefi/UefiSpec.h
@@ -1729,7 +1729,7 @@ EFI_STATUS
 #define EFI_1_02_SYSTEM_TABLE_REVISION  ((1 << 16) | (02))
 
 #define EFI_RUNTIME_SERVICES_SIGNATURE  SIGNATURE_64 ('R','U','N','T','S','E','R','V')
-#define EFI_RUNTIME_SERVICES_REVISION   EFI_2_10_SYSTEM_TABLE_REVISION
+#define EFI_RUNTIME_SERVICES_REVISION   EFI_2_30_SYSTEM_TABLE_REVISION
 
 ///
 /// EFI Runtime Services Table
@@ -1781,7 +1781,7 @@ typedef struct {
 
 
 #define EFI_BOOT_SERVICES_SIGNATURE   SIGNATURE_64 ('B','O','O','T','S','E','R','V')
-#define EFI_BOOT_SERVICES_REVISION    EFI_2_10_SYSTEM_TABLE_REVISION
+#define EFI_BOOT_SERVICES_REVISION    EFI_2_30_SYSTEM_TABLE_REVISION
 
 ///
 /// EFI Boot Services Table