diff --git a/package.json b/package.json
index 3c924a2..837cf79 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "test-ci": "npm run clean:coverage && jest --ci --coverage -c jest.config.cjs",
     "test-watch": "jest --watch -c jest.config.cjs",
     "typecheck": "tsc --project tsconfig.json --noEmit",
-    "watch:buildto": "node watchBuild.js"
+    "watch:buildto": "node watchBuild.cjs"
   },
   "dependencies": {
     "@camptocamp/inkmap": "^1.4.0",
diff --git a/watchBuild.js b/watchBuild.cjs
similarity index 99%
rename from watchBuild.js
rename to watchBuild.cjs
index 8cba0f4..9fefbce 100644
--- a/watchBuild.js
+++ b/watchBuild.cjs
@@ -1,6 +1,4 @@
 #!/usr/bin/env node
- 
-
 'use strict';
 
 const fs = require('fs-extra');