diff --git a/src/viewer.rs b/src/viewer.rs
index 0b536c0..dcbcd65 100644
--- a/src/viewer.rs
+++ b/src/viewer.rs
@@ -93,6 +93,10 @@ pub fn simulate_viewer_with_keyboard(
             viewer.position -= Vec3::X * time.delta_seconds();
         } else if input.pressed(KeyCode::D) {
             viewer.position += Vec3::X * time.delta_seconds();
+        } else if input.pressed(KeyCode::Up) {
+            viewer.position += Vec3::Y * time.delta_seconds();
+        } else if input.pressed(KeyCode::Down) {
+            viewer.position -= Vec3::Y * time.delta_seconds();
         }
     }
 }