diff --git a/doc/api/async_hooks.md b/doc/api/async_hooks.md
index 516199f9391dae..6a0258b539524e 100644
--- a/doc/api/async_hooks.md
+++ b/doc/api/async_hooks.md
@@ -428,6 +428,9 @@ callback to `listen()` will look like. The output formatting is slightly more
 elaborate to make calling context easier to see.
 
 ```js
+const async_hooks = require('async_hooks');
+const fs = require('fs');
+const net = require('net');
 const { fd } = process.stdout;
 
 let indent = 0;