diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 2628942..310a96e 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -12,8 +12,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/setup
-      - run: bun run build
-        working-directory: npm
       - run: bun check
         working-directory: npm
       - run: bun test
diff --git a/npm/package.json b/npm/package.json
index 827c358..0587393 100644
--- a/npm/package.json
+++ b/npm/package.json
@@ -38,7 +38,8 @@
   "scripts": {
     "check": "check -b ../node_modules/.bin",
     "dev": "bun test --watch",
-    "build": "bun build.ts"
+    "build": "bun build.ts",
+    "prepare": "bun run build"
   },
   "dependencies": {
     "@antfu/utils": "^0.7.7",