diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index 3c0aa6584..de3ed9ecb 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -4259,6 +4259,7 @@ declare var DeviceOrientationEvent: {
 };
 
 interface DocumentEventMap extends DocumentAndElementEventHandlersEventMap, GlobalEventHandlersEventMap {
+    "DOMContentLoaded": Event;
     "fullscreenchange": Event;
     "fullscreenerror": Event;
     "pointerlockchange": Event;
@@ -4476,6 +4477,8 @@ interface Document extends Node, DocumentAndElementEventHandlers, DocumentOrShad
     createEvent(eventInterface: "DeviceOrientationEvent"): DeviceOrientationEvent;
     createEvent(eventInterface: "DragEvent"): DragEvent;
     createEvent(eventInterface: "ErrorEvent"): ErrorEvent;
+    createEvent(eventInterface: "Event"): Event;
+    createEvent(eventInterface: "Events"): Event;
     createEvent(eventInterface: "FocusEvent"): FocusEvent;
     createEvent(eventInterface: "FontFaceSetLoadEvent"): FontFaceSetLoadEvent;
     createEvent(eventInterface: "FormDataEvent"): FormDataEvent;
@@ -16443,6 +16446,7 @@ declare var WheelEvent: {
 };
 
 interface WindowEventMap extends GlobalEventHandlersEventMap, WindowEventHandlersEventMap {
+    "DOMContentLoaded": Event;
     "devicemotion": DeviceMotionEvent;
     "deviceorientation": DeviceOrientationEvent;
     "gamepadconnected": GamepadEvent;
diff --git a/inputfiles/addedTypes.jsonc b/inputfiles/addedTypes.jsonc
index 6fe563b02..45c358e00 100644
--- a/inputfiles/addedTypes.jsonc
+++ b/inputfiles/addedTypes.jsonc
@@ -439,6 +439,10 @@
                         {
                             "name": "gamepaddisconnected",
                             "type": "GamepadEvent"
+                        },
+                        {
+                            "name": "DOMContentLoaded",
+                            "type": "Event"
                         }
                     ]
                 }
@@ -679,6 +683,14 @@
                             "overrideType": "null"
                         }
                     }
+                },
+                "events": {
+                    "event": [
+                        {
+                            "name": "DOMContentLoaded",
+                            "type": "Event"
+                        }
+                    ]
                 }
             },
             // This is used in the React d.ts files, and not including