diff --git a/include/mshtmdid.h b/include/mshtmdid.h
index 341da28b240..d17af33ae9b 100644
--- a/include/mshtmdid.h
+++ b/include/mshtmdid.h
@@ -3330,4 +3330,8 @@
 #define DISPID_IDOMPROCESSINGINSTRUCTION_TARGET  DISPID_PROCESSINGINSTRUCTION
 #define DISPID_IDOMPROCESSINGINSTRUCTION_DATA    DISPID_PROCESSINGINSTRUCTION+1
 
+/* IDocumentSelector */
+#define DISPID_IDOCUMENTSELECTOR_QUERYSELECTOR     DISPID_OMDOCUMENT+105
+#define DISPID_IDOCUMENTSELECTOR_QUERYSELECTORALL  DISPID_OMDOCUMENT+106
+
 #endif /* __MSHTMDID_H__ */
diff --git a/include/mshtml.idl b/include/mshtml.idl
index 8284b255cbd..c73a0f5a83f 100644
--- a/include/mshtml.idl
+++ b/include/mshtml.idl
@@ -14946,6 +14946,28 @@ interface IHTMLDocument7 : IDispatch
     HRESULT head([out, retval] IHTMLElement **p);
 }
 
+/*****************************************************************************
+ *    IDocumentSelector interface
+ */
+[
+    odl,
+    oleautomation,
+    dual,
+    uuid(30510462-98b5-11cf-bb82-00aa00bdce0b)
+]
+interface IDocumentSelector : IDispatch
+{
+    [id(DISPID_IDOCUMENTSELECTOR_QUERYSELECTOR)]
+    HRESULT querySelector(
+        [in] BSTR v,
+        [out, retval] IHTMLElement **pel);
+
+    [id(DISPID_IDOCUMENTSELECTOR_QUERYSELECTORALL)]
+    HRESULT querySelectorAll(
+        [in] BSTR v,
+        [out, retval] IHTMLDOMChildrenCollection **pel);
+}
+
 /*****************************************************************************
  *    DispHTMLDocument dispinterface
  */
@@ -15547,6 +15569,12 @@ methods:
     void updateSettings();
 
     WINE_HTMLDOMNODE_DISPINTERFACE_DECL;
+
+    [id(DISPID_IDOCUMENTSELECTOR_QUERYSELECTOR)]
+    IHTMLElement *querySelector([in] BSTR v);
+
+    [id(DISPID_IDOCUMENTSELECTOR_QUERYSELECTORALL)]
+    IHTMLDOMChildrenCollection *querySelectorAll([in] BSTR v);
 }
 
 /*****************************************************************************