diff --git a/core/lib/Drupal/Core/Routing/RequestContext.php b/core/lib/Drupal/Core/Routing/RequestContext.php
index 428eb1bb4c..24f196079b 100644
--- a/core/lib/Drupal/Core/Routing/RequestContext.php
+++ b/core/lib/Drupal/Core/Routing/RequestContext.php
@@ -31,7 +31,7 @@ public function fromRequestStack(RequestStack $request_stack) {
   /**
    * {@inheritdoc}
    */
-  public function fromRequest(Request $request) {
+  public function fromRequest(Request $request): static {
     // @todo Extract the code in DrupalKernel::initializeRequestGlobals.
     //   See https://www.drupal.org/node/2404601
     if (isset($GLOBALS['base_url'])) {