diff --git a/core/modules/system/system.module b/core/modules/system/system.module
index 522159f0..5a970e1e 100644
--- a/core/modules/system/system.module
+++ b/core/modules/system/system.module
@@ -1167,6 +1167,8 @@ function system_time_zones($blank = NULL, $grouped = FALSE) {
  *   - FileSystemInterface::EXISTS_RENAME: Append _{incrementing number} until
  *     the filename is unique.
  *   - FileSystemInterface::EXISTS_ERROR: Do nothing and return FALSE.
+ * @param array $options
+ *   Optional array of options to pass to \Drupal::httpClient()->get().
  *
  * @return mixed
  *   One of these possibilities:
@@ -1176,7 +1178,7 @@ function system_time_zones($blank = NULL, $grouped = FALSE) {
  *     object which describes the file.
  *   - If it fails, FALSE.
  */
-function system_retrieve_file($url, $destination = NULL, $managed = FALSE, $replace = FileSystemInterface::EXISTS_RENAME) {
+function system_retrieve_file($url, $destination = NULL, $managed = FALSE, $replace = FileSystemInterface::EXISTS_RENAME, array $options = []) {
   $parsed_url = parse_url($url);
   /** @var \Drupal\Core\File\FileSystemInterface $file_system */
   $file_system = \Drupal::service('file_system');
@@ -1196,7 +1198,7 @@ function system_retrieve_file($url, $destination = NULL, $managed = FALSE, $repl
   }
   try {
     $data = (string) \Drupal::httpClient()
-      ->get($url)
+      ->get($url, $options)
       ->getBody();
     if ($managed) {
       /** @var \Drupal\file\FileRepositoryInterface $file_repository */