diff --git a/package.json b/package.json
index d1e693690..564ea84b6 100644
--- a/package.json
+++ b/package.json
@@ -118,6 +118,7 @@
     "typescript": "^5.7.2",
     "vite-plugin-eslint4b": "^0.5.1",
     "vitepress": "^1.4.1",
+    "vitest": "^3.2.4",
     "vue-eslint-parser": "^10.0.0"
   }
 }
diff --git a/vitest.config.ts b/vitest.config.mts
similarity index 100%
rename from vitest.config.ts
rename to vitest.config.mts