diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index ed78ca48c..0b5c078fc 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -2978,6 +2978,7 @@ interface Element extends Node, GlobalEventHandlers, ElementTraversal, NodeSelec
     webkitRequestFullScreen(): void;
     webkitRequestFullscreen(): void;
     getElementsByClassName(classNames: string): NodeListOf<Element>;
+    matches(selector: string): boolean;
     addEventListener(type: "MSGestureChange", listener: (ev: MSGestureEvent) => any, useCapture?: boolean): void;
     addEventListener(type: "MSGestureDoubleTap", listener: (ev: MSGestureEvent) => any, useCapture?: boolean): void;
     addEventListener(type: "MSGestureEnd", listener: (ev: MSGestureEvent) => any, useCapture?: boolean): void;
diff --git a/inputfiles/addedTypes.json b/inputfiles/addedTypes.json
index 48de9a027..39543b948 100644
--- a/inputfiles/addedTypes.json
+++ b/inputfiles/addedTypes.json
@@ -139,6 +139,11 @@
         "interface": "Element",
         "signatures": ["getElementsByClassName(classNames: string): NodeListOf<Element>"]
     },
+    {
+        "kind": "method",
+        "interface": "Element",
+        "signatures": ["matches(selector: string): boolean"]
+    },
     {
         "kind": "indexer",
         "interface": "HTMLCollection",