diff --git a/package.json b/package.json
index d11c246..59e55eb 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "lint": "eslint src/**/*.ts",
     "test": "jest",
     "start": "ts-node src/cli.ts",
-    "build": "rm -r dist ; rollup -c"
+    "build": "rm -r dist ; rollup -c && chmod a+x ./dist/cli.js"
   },
   "devDependencies": {
     "@rollup/plugin-commonjs": "^22.0.0",
diff --git a/rollup.config.js b/rollup.config.js
index 9e8f664..9aa0c19 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -37,6 +37,7 @@ export default [
       {
         file: packageJson.bin,
         format: 'cjs',
+        banner: '#!/usr/bin/env node',
       },
     ],
     plugins,