diff --git a/experiments/2024-10-30/src/shader.wgsl b/experiments/2024-10-30/src/shader.wgsl
index 104c84f05..0350e92dd 100644
--- a/experiments/2024-10-30/src/shader.wgsl
+++ b/experiments/2024-10-30/src/shader.wgsl
@@ -3,6 +3,7 @@ var<uniform> transform: mat4x4<f32>;
 
 struct VertexInput {
     @location(0) position: vec3<f32>,
+    @location(1) normal: vec3<f32>,
 }
 
 struct VertexOutput {