diff --git a/ansi/README.md b/ansi/README.md
index 56d3ac2a..5e8568f1 100644
--- a/ansi/README.md
+++ b/ansi/README.md
@@ -156,7 +156,7 @@ console.log(
 ```
 
 ```
-$ deno run https://deno.land/x/cliffy/examples/ansi/functional.ts
+$ deno run --allow-net https://deno.land/x/cliffy/examples/ansi/functional.ts
 ```
 
 ### Tty