diff --git a/packages/tailwindcss-language-server/src/lib/extract-class-names.test.ts b/packages/tailwindcss-language-server/src/lib/extract-class-names.test.ts
index 6e0cccdcadbbb960fb0365c98cea1f4f4119e1d9..3987ec4a82ae98373083363ada3199f0dec898d9 100644
--- a/packages/tailwindcss-language-server/src/lib/extract-class-names.test.ts
+++ b/packages/tailwindcss-language-server/src/lib/extract-class-names.test.ts
@@ -1,4 +1,4 @@
-import { expect, test } from 'vitest'
+/// <reference types="bun-types" />
 import { parse } from 'postcss'
 import extractClassNames from './extractClassNames'
 
@@ -24,6 +24,7 @@   expect(result.classNames).toHaveProperty('foo')
   expect(result.classNames).toHaveProperty('bar')
   expect(result.classNames['foo']).toEqual({
     __info: {
+      __rule: true,
       __source: undefined,
       __pseudo: [],
       __scope: null,