diff --git a/.github/workflows/size.yml b/.github/workflows/size.yml
index ffae227d7..d20fb88e1 100644
--- a/.github/workflows/size.yml
+++ b/.github/workflows/size.yml
@@ -38,8 +38,6 @@ jobs:
           cache: 'yarn'
       - name: Install
         run: yarn install
-      - name: Build packages
-        run: yarn build
       - name: Check build size
         uses: posva/size-check-action@v1.1.2
         with:
diff --git a/package.json b/package.json
index 186a9fc6f..5caf7dd1c 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   "scripts": {
     "benchmark": "node ./benchmark/index.js",
     "build": "node -r esbuild-register scripts/build.ts",
-    "build:size": "npm-run-all --parallel build:size-*",
+    "build:size": "yarn build && npm-run-all --parallel build:size-*",
     "build:size-core": "cd packages/size-check-core && yarn build",
     "build:size-petite-vue-i18n": "cd packages/size-check-petite-vue-i18n && yarn build",
     "build:size-vue-i18n": "cd packages/size-check-vue-i18n && yarn build",