diff --git a/README.md b/README.md
index f4434b6..ba66680 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,8 @@ Install php dependecies:
     ini_set('display_errors', 1);    ini_set('display_startup_errors', 1);    error_reporting(E_ALL);
 
 ## Testing on MacOs
- * brew install php 
+ * brew install php
+ * brew tap kabel/php-ext 
  * brew install kabel/php-ext/php-imap
  * php -S localhost:8000 -t src