diff --git a/core/lib/Drupal/Core/Http/RequestStack.php b/core/lib/Drupal/Core/Http/RequestStack.php
index 23ad26d10b..ab7d1d21f1 100644
--- a/core/lib/Drupal/Core/Http/RequestStack.php
+++ b/core/lib/Drupal/Core/Http/RequestStack.php
@@ -2,7 +2,7 @@
 
 namespace Drupal\Core\Http;
 
-@trigger_error('The ' . __NAMESPACE__ . '\RequestStack is deprecated in drupal:9.4.0 and is removed from drupal:10.0.0. There is no replacement. See https://www.drupal.org/node/3265357', E_USER_DEPRECATED);
+@trigger_error('The ' . __NAMESPACE__ . '\RequestStack is deprecated in drupal:10.0.0 and is removed from drupal:11.0.0. There is no replacement. See https://www.drupal.org/node/3265357', E_USER_DEPRECATED);
 
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\RequestStack as SymfonyRequestStack;
@@ -10,13 +10,12 @@
 /**
  * Forward-compatibility shim for Symfony's RequestStack.
  *
- * @deprecated in drupal:9.4.0 and is removed from drupal:10.0.0.
- * There is no replacement.
+ * @deprecated in drupal:10.0.0 and is removed from drupal:11.0.0. There is no
+ *   replacement.
  *
  * @see https://www.drupal.org/node/3265357
  *
- * @todo Remove this in Drupal 10.
- * @see https://www.drupal.org/project/drupal/issues/3265121
+ * @todo Remove this in Drupal 10 https://www.drupal.org/node/3265121
  */
 class RequestStack extends SymfonyRequestStack {
 
@@ -27,22 +26,8 @@ class RequestStack extends SymfonyRequestStack {
    *   The main request.
    */
   public function getMainRequest(): ?Request {
-    @trigger_error('The ' . __NAMESPACE__ . '\RequestStack is deprecated in drupal:9.4.0 and is removed from drupal:10.0.0. There is no replacement. See https://www.drupal.org/node/3265357', E_USER_DEPRECATED);
-
-    if (method_exists(SymfonyRequestStack::class, 'getMainRequest')) {
-      return parent::getMainRequest();
-    }
-    else {
-      return parent::getMasterRequest();
-    }
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function getMasterRequest(): ?Request {
-    @trigger_error('Drupal\Core\Http\RequestStack::getMasterRequest() is deprecated, use getMainRequest() instead.', E_USER_DEPRECATED);
-    return $this->getMainRequest();
+    @trigger_error('The ' . __NAMESPACE__ . '\RequestStack is deprecated in drupal:10.0.0 and is removed from drupal:11.0.0. There is no replacement. See https://www.drupal.org/node/3265357', E_USER_DEPRECATED);
+    return parent::getMainRequest();
   }
 
 }
diff --git a/core/tests/Drupal/Tests/Core/Http/RequestStackLegacyTest.php b/core/tests/Drupal/Tests/Core/Http/RequestStackLegacyTest.php
index 2fd702492b..1114e06a58 100644
--- a/core/tests/Drupal/Tests/Core/Http/RequestStackLegacyTest.php
+++ b/core/tests/Drupal/Tests/Core/Http/RequestStackLegacyTest.php
@@ -9,8 +9,7 @@
  * @coversDefaultClass \Drupal\Core\Http\RequestStack
  * @group legacy
  *
- * @todo Remove this in Drupal 10.
- * @see https://www.drupal.org/project/drupal/issues/3265121
+ * @todo Remove this in Drupal 10 https://www.drupal.org/node/3265121
  */
 class RequestStackLegacyTest extends UnitTestCase {
 
@@ -22,20 +21,8 @@ class RequestStackLegacyTest extends UnitTestCase {
   public function testGetMainRequestDeprecation() {
     $stack = new RequestStack();
 
-    $this->expectDeprecation('The Drupal\Core\Http\RequestStack is deprecated in drupal:9.4.0 and is removed from drupal:10.0.0. There is no replacement. See https://www.drupal.org/node/3265357');
+    $this->expectDeprecation('The Drupal\Core\Http\RequestStack is deprecated in drupal:10.0.0 and is removed from drupal:11.0.0. There is no replacement. See https://www.drupal.org/node/3265357');
     $this->assertNull($stack->getMainRequest());
   }
 
-  /**
-   * Tests deprecation message in our subclassed RequestStack.
-   *
-   * @covers ::getMasterRequest
-   */
-  public function testGetMasterRequestDeprecation() {
-    $stack = new RequestStack();
-
-    $this->expectDeprecation('Drupal\Core\Http\RequestStack::getMasterRequest() is deprecated, use getMainRequest() instead.');
-    $this->assertNull($stack->getMasterRequest());
-  }
-
 }