diff --git a/package.json b/package.json
index 4d4b343e3..a910ad0af 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "private": true,
   "scripts": {
     "format": "npx prettier --write src",
-    "serve": "vue-cli-service serve",
+    "serve": "npx prettier --write src && vue-cli-service serve",
     "build": "vue-cli-service build",
     "test:unit": "vue-cli-service test:unit --coverage --ci",
     "test:unit:lite": "vue-cli-service test:unit --ci",