diff --git a/core/lib/Drupal/Core/Url.php b/core/lib/Drupal/Core/Url.php
index e7624d8..ccc62fe 100644
--- a/core/lib/Drupal/Core/Url.php
+++ b/core/lib/Drupal/Core/Url.php
@@ -2,6 +2,7 @@
 
 namespace Drupal\Core;
 
+use Drupal\Component\Utility\NestedArray;
 use Drupal\Component\Utility\UrlHelper;
 use Drupal\Core\DependencyInjection\DependencySerializationTrait;
 use Drupal\Core\Routing\RouteMatchInterface;
@@ -675,6 +676,23 @@ public function setOption($name, $value) {
   }
 
   /**
+   * Merges the URL options with any currently set.
+   *
+   * In the case of conflict with existing options, the new options will replace
+   * the existing options.
+   *
+   * @param array $options
+   *   The array of options. See \Drupal\Core\Url::fromUri() for details on what
+   *   it contains.
+   *
+   * @return $this
+   */
+  public function mergeOptions($options) {
+    $this->options = NestedArray::mergeDeep($this->options, $options);
+    return $this;
+  }
+
+  /**
    * Returns the URI value for this Url object.
    *
    * Only to be used if self::$unrouted is TRUE.
diff --git a/core/tests/Drupal/Tests/Core/UrlTest.php b/core/tests/Drupal/Tests/Core/UrlTest.php
index 5324c26..e9a9930 100644
--- a/core/tests/Drupal/Tests/Core/UrlTest.php
+++ b/core/tests/Drupal/Tests/Core/UrlTest.php
@@ -469,6 +469,29 @@ public function testGetOptions($urls) {
   }
 
   /**
+   * Tests the setOptions() method.
+   *
+   * @covers ::setOptions
+   */
+  public function testSetOptions() {
+    $url = Url::fromRoute('test_route', []);
+    $this->assertEquals([], $url->getOptions());
+    $url->setOptions(['foo' => 'bar']);
+    $this->assertEquals(['foo' => 'bar'], $url->getOptions());
+  }
+
+  /**
+   * Tests the mergeOptions() method.
+   *
+   * @covers ::mergeOptions
+   */
+  public function testMergeOptions() {
+    $url = Url::fromRoute('test_route', [], ['foo' => 'bar', 'bar' => ['key' => 'value']]);
+    $url->mergeOptions(['bar' => ['key' => 'value1', 'key2' => 'value2']]);
+    $this->assertEquals(['foo' => 'bar', 'bar' => ['key' => 'value1', 'key2' => 'value2']], $url->getOptions());
+  }
+
+  /**
    * Tests the access() method for routed URLs.
    *
    * @param bool $access