diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index f8a084d49..7f2ad7581 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -9358,6 +9358,7 @@ interface Node extends EventTarget {
     readonly baseURI: string | null;
     readonly childNodes: NodeListOf<Node & ChildNode>;
     readonly firstChild: Node | null;
+    readonly isConnected: boolean;
     readonly lastChild: Node | null;
     readonly localName: string | null;
     readonly namespaceURI: string | null;
diff --git a/inputfiles/overridingTypes.json b/inputfiles/overridingTypes.json
index b6866c860..46561329d 100644
--- a/inputfiles/overridingTypes.json
+++ b/inputfiles/overridingTypes.json
@@ -378,6 +378,13 @@
                 },
                 "properties": {
                     "property": {
+                        "isConnected": {
+                            "name": "isConnected",
+                            "default": "false",
+                            "read-only": 1,
+                            "type-original": "boolean",
+                            "type": "boolean"
+                        },
                         "firstChild": {
                             "name": "firstChild",
                             "read-only": 1,