diff --git a/src/plugins/php/weechat-php.stub.php b/src/plugins/php/weechat-php.stub.php
index fc9132cf2..4d8bba5ca 100644
--- a/src/plugins/php/weechat-php.stub.php
+++ b/src/plugins/php/weechat-php.stub.php
@@ -2,6 +2,9 @@
 
 /** @generate-legacy-arginfo */
 
+// SPDX-FileCopyrightText: 2021-2022 Adam Saponara <as@php.net>
+// SPDX-FileCopyrightText: 2021-2025 Sébastien Helleu <flashcode@flashtux.org>
+
 // Keep these function stubs in sync with the API. This ensures
 // `--enable-debug` builds of PHP work. After updating this file, run
 //