diff --git a/include/dxc/DXIL/DxilConstants.h b/include/dxc/DXIL/DxilConstants.h
index e1d5aa0ca5..b84972eb12 100644
--- a/include/dxc/DXIL/DxilConstants.h
+++ b/include/dxc/DXIL/DxilConstants.h
@@ -208,7 +208,9 @@ enum class LinalgMatrixLayout : uint32_t {
   RowMajor = 0,
   ColumnMajor = 1,
   MulOptimal = 2,
-  OuterProductOptimal = 3,
+  MulOptimalTranspose = 3,
+  OuterProductOptimal = 4,
+  OuterProductOptimalTranspose = 5,
 };
 
 // Must match D3D_INTERPOLATION_MODE
diff --git a/tools/clang/lib/Headers/hlsl/dx/linalg.h b/tools/clang/lib/Headers/hlsl/dx/linalg.h
index 230ac77cbe..732256eb99 100644
--- a/tools/clang/lib/Headers/hlsl/dx/linalg.h
+++ b/tools/clang/lib/Headers/hlsl/dx/linalg.h
@@ -151,7 +151,9 @@ struct MatrixLayout {
     RowMajor = 0,
     ColMajor = 1,
     MulOptimal = 2,
-    OuterProductOptimal = 3,
+    MulOptimalTranspose = 3,
+    OuterProductOptimal = 4,
+    OuterProductOptimalTranspose = 5,
   };
 };
 using MatrixLayoutEnum = MatrixLayout::MatrixLayoutEnum;