diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index 46e0288c6..9d1a8e8a2 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -5756,6 +5756,7 @@ interface GlobalEventHandlersEventMap {
     "animationiteration": AnimationEvent;
     "animationstart": AnimationEvent;
     "auxclick": MouseEvent;
+    "beforeinput": InputEvent;
     "blur": FocusEvent;
     "cancel": Event;
     "canplay": Event;
diff --git a/inputfiles/addedTypes.json b/inputfiles/addedTypes.json
index 96e5912bf..9f503f568 100644
--- a/inputfiles/addedTypes.json
+++ b/inputfiles/addedTypes.json
@@ -69,6 +69,10 @@
             "GlobalEventHandlers": {
                 "attributeless-events": {
                     "event": [
+                        {
+                            "name": "beforeinput",
+                            "type": "InputEvent"
+                        },
                         {
                             "name": "compositionstart",
                             "type": "CompositionEvent"