diff --git a/MdeModulePkg/ChangeLog.txt b/MdeModulePkg/ChangeLog.txt
index d72f259c3e..dbad47fbd4 100644
--- a/MdeModulePkg/ChangeLog.txt
+++ b/MdeModulePkg/ChangeLog.txt
@@ -146,4 +146,18 @@ EDK_3773:  Non-Compatible: qwang12
 		   use gEfiFirmwareVolume2ProtocolGuid.
 		3) The gEfiFirmwareVolumeProtocolGuid in [Depex] section of INF file should updated.
 		   And the package dependency should also be changed if needed due to this protocol
-		   GUID change.
\ No newline at end of file
+		   GUID change.
+
+==========================================================================================
+EDK_3967:  Non-Compatible: lgao4
+
+	  Class_Library:  Remove PeCoffLoader library class and its instances.
+
+		Code Change :
+		1) Remove MdeModulePkg/Include/Library/PeCoffLoaderLib.h
+		2) Remove MdeModulePkg/Library/DxePeCoffLoaderFromHobLib and PeiDxePeCoffLoaderLib instance
+		3) Modify PeiCore, DxeIpl and DxeCore to use PeCoffLib in place of PeCoffLoaderLib.
+
+		Possible Impacts:
+		1) All modules don't use PeCoffloader library class any longer to load PeImage. 
+		   If necessary, they should use PeCoffLib of MdePkg to load PeImage.