diff --git a/packages/format-title/package.json b/packages/format-title/package.json
index 7529034f55..7adafe5188 100644
--- a/packages/format-title/package.json
+++ b/packages/format-title/package.json
@@ -27,8 +27,8 @@
   },
   "scripts": {
     "prebuild": "rimraf dist",
-    "build": "tsc --module commonjs && rollup -c rollup.config.ts",
-    "start": "rollup -c rollup.config.ts -w",
+    "build": "tsc --module commonjs && rollup -c rollup.config.js",
+    "start": "rollup -c rollup.config.js -w",
     "prepublishOnly": "npm run build",
     "lint": "eslint \"src/**/*.ts\""
   },
diff --git a/packages/format-title/rollup.config.ts b/packages/format-title/rollup.config.js
similarity index 100%
rename from packages/format-title/rollup.config.ts
rename to packages/format-title/rollup.config.js