diff --git a/SecurityPkg/SecurityPkg.dec b/SecurityPkg/SecurityPkg.dec
index 2708e7953c..7ae42ea150 100644
--- a/SecurityPkg/SecurityPkg.dec
+++ b/SecurityPkg/SecurityPkg.dec
@@ -405,7 +405,7 @@
   # @Prompt A physical presence user status
   gEfiSecurityPkgTokenSpaceGuid.PcdUserPhysicalPresence|FALSE|BOOLEAN|0x00010019
 
-  ## Indicate the TPM2 ACPI table revision. Rev 4 is defined in TCG ACPI Specification Rev 00.37.<BR><BR>
+  ## Indicate the TPM2 ACPI table revision. Rev 4 has been defined since TCG ACPI Specification Rev 00.37.<BR><BR>
   # To support configuring from setup page, this PCD can be DynamicHii type and map to a setup option.<BR>
   # For example, map to TCG2_VERSION.Tpm2AcpiTableRev to be configured by Tcg2ConfigDxe driver.<BR>
   # gEfiSecurityPkgTokenSpaceGuid.PcdTpm2AcpiTableRev|L"TCG2_VERSION"|gTcg2ConfigFormSetGuid|0x8|3|NV,BS<BR>
diff --git a/SecurityPkg/Tcg/Tcg2Dxe/Tcg2Dxe.inf b/SecurityPkg/Tcg/Tcg2Dxe/Tcg2Dxe.inf
index 87f0492750..49402d902c 100644
--- a/SecurityPkg/Tcg/Tcg2Dxe/Tcg2Dxe.inf
+++ b/SecurityPkg/Tcg/Tcg2Dxe/Tcg2Dxe.inf
@@ -6,6 +6,8 @@
 #      along with
 #    "Errata for PC Client Specific Platform Firmware Profile Specification Version 1.0 Revision 1.03"
 #    "TCG EFI Protocol Specification" "Family 2.0" "Level 00 Revision 00.13"
+#      along with
+#    "Errata Version 0.5 for TCG EFI Protocol Specification"
 #
 #  This module will produce Tcg2 protocol and measure boot environment.
 #
@@ -14,7 +16,7 @@
 #  This external input must be validated carefully to avoid security issue like
 #  buffer overflow, integer overflow.
 #
-# Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2015 - 2019, Intel Corporation. All rights reserved.<BR>
 # This program and the accompanying materials
 # are licensed and made available under the terms and conditions of the BSD License
 # which accompanies this distribution. The full text of the license may be found at
diff --git a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.inf b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.inf
index 97cec443e4..cc5768294d 100644
--- a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.inf
+++ b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.inf
@@ -2,8 +2,10 @@
 #  Provides ACPI methods for TPM 2.0 support
 #
 #  Spec Compliance Info:
-#     "TCG ACPI Specification Level 00 Revision 00.37"
+#     "TCG ACPI Specification Version 1.2 Revision 8"
 #     "Physical Presence Interface Specification Version 1.30 Revision 00.52"
+#       along with
+#     "Errata Version 0.4 for TCG PC Client Platform Physical Presence Interface Specification"
 #     "Platform Reset Attack Mitigation Specification Version 1.00"
 #    TPM2.0 ACPI device object
 #     "TCG PC Client Platform Firmware Profile Specification for TPM Family 2.0 Level 00 Revision 1.03 v51"
@@ -18,7 +20,7 @@
 #  This driver will have external input - variable and ACPINvs data in SMM mode.
 #  This external input must be validated carefully to avoid security issue.
 #
-# Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2015 - 2019, Intel Corporation. All rights reserved.<BR>
 # This program and the accompanying materials
 # are licensed and made available under the terms and conditions of the BSD License
 # which accompanies this distribution. The full text of the license may be found at