diff --git a/include/dxgi1_3.idl b/include/dxgi1_3.idl
index 85fcc0cb..83f4c977 100644
--- a/include/dxgi1_3.idl
+++ b/include/dxgi1_3.idl
@@ -37,3 +37,14 @@ interface IDXGISwapChain2 : IDXGISwapChain1
     HRESULT SetMatrixTransform(const DXGI_MATRIX_3X2_F *matrix);
     HRESULT GetMatrixTransform(DXGI_MATRIX_3X2_F *matrix);
 };
+
+[
+    local,
+    object,
+    uuid(25483823-cd46-4c7d-86ca-47aa95b837bd),
+    pointer_default(unique)
+]
+interface IDXGIFactory3 : IDXGIFactory2
+{
+    UINT GetCreationFlags();
+};
diff --git a/include/dxgi1_4.idl b/include/dxgi1_4.idl
index c3b0bf7b..03acc3ed 100644
--- a/include/dxgi1_4.idl
+++ b/include/dxgi1_4.idl
@@ -33,3 +33,15 @@ interface IDXGISwapChain3 : IDXGISwapChain2
     HRESULT ResizeBuffers1(UINT buffer_count, UINT width, UINT height, DXGI_FORMAT format,
             UINT flags, const UINT *node_mask, IUnknown *const *present_queue);
 };
+
+[
+    local,
+    object,
+    uuid(1bc6ea02-ef36-464f-bf0c-21ca39e5168a),
+    pointer_default(unique),
+]
+interface IDXGIFactory4 : IDXGIFactory3
+{
+    HRESULT EnumAdapterByLuid(LUID luid, REFIID iid, void **adapter);
+    HRESULT EnumWarpAdapter(REFIID iid, void **adapter);
+};