diff --git a/threejs/three.d.ts b/threejs/three.d.ts
index ab2cce919..eaa5b5f32 100644
--- a/threejs/three.d.ts
+++ b/threejs/three.d.ts
@@ -1635,6 +1635,7 @@ declare module THREE {
         point: Vector3;
         index: number;
         face: Face3;
+        faceIndex: number;
         object: Object3D;
     }