--- a/classes/api/rest_client.php
+++ b/classes/api/rest_client.php
@@ -49,11 +49,14 @@ class local_bath_grades_transfer_rest_client
      * local_bath_grades_transfer_rest_client constructor.
      */
     public function __construct() {
+        global $CFG;
         $apiurl = get_config('local_bath_grades_transfer', 'samis_api_url');
         $this->username = get_config('local_bath_grades_transfer', 'samis_api_user');
         $this->password = get_config('local_bath_grades_transfer', 'samis_api_password');
         $this->client = new Client([
-                'base_uri' => $apiurl
+                'base_uri' => $apiurl,
+                'proxy'   => 'tcp://'.$CFG->proxyhost.':'.$CFG->proxyport
+                ]
             ]
         );
     }