diff --git a/threejs/three.d.ts b/threejs/three.d.ts
index c369e0d2b..3be13c220 100644
--- a/threejs/three.d.ts
+++ b/threejs/three.d.ts
@@ -1633,6 +1633,7 @@ declare module THREE {
         distance: number;
         point: Vector3;
         face: Face3;
+        faceIndex: number;
         object: Object3D;
     }