diff --git a/src/spec/controls/OrbitControls.spec.ts b/src/spec/controls/OrbitControls.spec.ts
index 16d8a95..59f550d 100644
--- a/src/spec/controls/OrbitControls.spec.ts
+++ b/src/spec/controls/OrbitControls.spec.ts
@@ -1,6 +1,6 @@
-import OrbitControls from '../../lib/controls/OrbitControls';
 import { describe, expect, test } from 'vitest';
 import * as THREE from 'three';
+import OrbitControls from '../../lib/controls/OrbitControls.js';
 
 const getRenderer = () => {
   const renderer = new THREE.WebGLRenderer({ antialias: true, alpha: false });
diff --git a/src/spec/util.spec.ts b/src/spec/util.spec.ts
index 17f7ede..4e8bd55 100644
--- a/src/spec/util.spec.ts
+++ b/src/spec/util.spec.ts
@@ -1,5 +1,5 @@
-import { nextFrame, paced, sleep } from '../lib/util';
 import { describe, expect, test } from 'vitest';
+import { nextFrame, paced, sleep } from '../lib/util.js';
 
 describe('util', () => {
   describe('nextFrame', () => {
diff --git a/src/spec/world.spec.ts b/src/spec/world.spec.ts
index 82d2722..c0cf87e 100644
--- a/src/spec/world.spec.ts
+++ b/src/spec/world.spec.ts
@@ -1,5 +1,5 @@
-import { getSizeCategory, getFade } from '../lib/world.js';
 import { describe, expect, test } from 'vitest';
+import { getSizeCategory, getFade } from '../lib/world.js';
 
 describe('world', () => {
   describe('getFade', () => {