diff --git a/README.md b/README.md
index f5863ac..db7558a 100644
--- a/README.md
+++ b/README.md
@@ -79,6 +79,7 @@ PHP >= 8.1
 
 ## Token
 
+- API key
 - Jwt (based on [Firebase PHP-JWT](https://github.com/firebase/php-jwt))