diff --git a/README.md b/README.md
index c453cc9..9348d55 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ drupal_settings:
               default: # The database target
                 driver: mysql # Optional, defaults to 'mysql'
                 host: localhost # Optional, defaults to 'localhost'
+                port: 3306 # Optional
                 database: mydatabase
                 username: user
                 password: secret