diff --git a/phpBB/phpbb/file_downloader.php b/phpBB/phpbb/file_downloader.php
index 14607ece0c..c73983f464 100644
--- a/phpBB/phpbb/file_downloader.php
+++ b/phpBB/phpbb/file_downloader.php
@@ -51,6 +51,10 @@ class file_downloader
 		return new Client([
 			'base_uri' => $host,
 			'timeout'  => $timeout,
+			'headers' => [
+				'user-agent' => 'phpBB/' . PHPBB_VERSION,
+				'accept' => 'text/html,application/xhtml+xml,application/xml'
+			  ],
 		]);
 	}