diff --git a/include/llvm/Support/COFF.h b/include/llvm/Support/COFF.h
index cdab90ffdec..e09ef07d81d 100644
--- a/include/llvm/Support/COFF.h
+++ b/include/llvm/Support/COFF.h
@@ -562,8 +562,12 @@ namespace COFF {
     IMAGE_DLL_CHARACTERISTICS_NO_SEH = 0x0400,
     /// Do not bind the image.
     IMAGE_DLL_CHARACTERISTICS_NO_BIND = 0x0800,
+    ///< Image should execute in an AppContainer.
+    IMAGE_DLL_CHARACTERISTICS_APPCONTAINER = 0x1000,
     ///< A WDM driver.
     IMAGE_DLL_CHARACTERISTICS_WDM_DRIVER = 0x2000,
+    ///< Image supports Control Flow Guard.
+    IMAGE_DLL_CHARACTERISTICS_GUARD_CF = 0x4000,
     /// Terminal Server aware.
     IMAGE_DLL_CHARACTERISTICS_TERMINAL_SERVER_AWARE = 0x8000
   };
diff --git a/tools/llvm-readobj/COFFDumper.cpp b/tools/llvm-readobj/COFFDumper.cpp
index 8b0dcb3e2c4..7842cd4d44f 100644
--- a/tools/llvm-readobj/COFFDumper.cpp
+++ b/tools/llvm-readobj/COFFDumper.cpp
@@ -193,7 +193,9 @@ static const EnumEntry<COFF::DLLCharacteristics> PEDLLCharacteristics[] = {
   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_ISOLATION         ),
   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_SEH               ),
   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_BIND              ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_APPCONTAINER         ),
   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_WDM_DRIVER           ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_GUARD_CF             ),
   LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_TERMINAL_SERVER_AWARE),
 };