diff --git a/package.json b/package.json
index 4bbe897af..ca73019c7 100644
--- a/package.json
+++ b/package.json
@@ -75,8 +75,8 @@
     "test:watch": "vitest --watch",
     "test:build": "vitest --mode test-build",
     "tsd": "tsc -p test-dts/tsconfig.tsd.json",
-    "build": "rollup -c rollup.config.js",
-    "prepare": "rollup -c rollup.config.js",
+    "build": "rollup -c rollup.config.ts",
+    "prepare": "rollup -c rollup.config.ts",
     "lint": "eslint --ext .ts src/ tests/",
     "lint:fix": "pnpm run lint --fix",
     "docs:dev": "vitepress dev docs",
diff --git a/rollup.config.js b/rollup.config.ts
similarity index 100%
rename from rollup.config.js
rename to rollup.config.ts