diff --git a/html/index.php b/html/index.php
index e89cb5a..3845523 100644
--- a/html/index.php
+++ b/html/index.php
@@ -1,5 +1,10 @@
 <?php
+
 header('Access-Control-Allow-Origin: *');
+header('Access-Control-Allow-Methods: GET, POST, PUT, DELETE, PATCH, OPTIONS');
+header('Access-Control-Allow-Credentials: true');
+header('Access-Control-Allow-Headers: Authorization, origin, if-none-match');
+header('Access-Control-Expose-Headers: *');
 
 require_once (realpath(__DIR__ . '/../vendor/autoload.php'));
 
@@ -8,4 +13,4 @@
 // Instantiate Slim, load dependencies and middlewares
 $app = Api::boot();
 
-$app->run();
\ No newline at end of file
+$app->run();