diff --git a/src/lib/calendar/__tests__/chinese_calendar.ts b/src/lib/calendar/__tests__/chinese_calendar.ts
index 716bf16c..2ce4f826 100644
--- a/src/lib/calendar/__tests__/chinese_calendar.ts
+++ b/src/lib/calendar/__tests__/chinese_calendar.ts
@@ -1,4 +1,4 @@
-import fs from "fs";
+import fs from 'fs';
 import path from 'path';
 import { describe, expect, test } from '@jest/globals';