diff --git a/doc/api/packages.md b/doc/api/packages.md
index 473cdba4389945..739db6d273e46e 100644
--- a/doc/api/packages.md
+++ b/doc/api/packages.md
@@ -675,12 +675,12 @@ code will also work:
 }
 ```
 
-```js
+```cjs
 // ./index.js
 module.exports = 42;
 ```
 
-```js
+```cjs
 // ./other.js
 console.log(require('@my/package'));
 ```