diff -u b/core/core.services.yml b/core/core.services.yml
--- b/core/core.services.yml
+++ b/core/core.services.yml
@@ -1219,7 +1219,9 @@
     tags:
       - { name: twig.extension, priority: 100 }
     calls:
-      - [setDependencies, ['@url_generator', '@link_generator', '@theme.manager']]
+      - [setUrlGenerator, ['@url_generator']]
+      - [setLinkGenerator, ['@link_generator']]
+      - [setThemeManager, ['@theme.manager']]
   # @todo Figure out what to do about debugging functions.
   # @see http://drupal.org/node/1804998
   twig.extension.debug:
diff -u b/core/lib/Drupal/Core/Template/TwigExtension.php b/core/lib/Drupal/Core/Template/TwigExtension.php
--- b/core/lib/Drupal/Core/Template/TwigExtension.php
+++ b/core/lib/Drupal/Core/Template/TwigExtension.php
@@ -43,25 +43,45 @@
   /**
    * The theme manager.
    *
-   * @var \Drupal\Core\Theme\ThemeManagerInterface;
+   * @var \Drupal\Core\Theme\ThemeManagerInterface
    */
   protected $themeManager;
 
   /**
-   * Constructs \Drupal\Core\Template\TwigExtension.
+   * Sets the URL generator.
    *
    * @param \Drupal\Core\Routing\UrlGeneratorInterface $url_generator
    *   The URL generator.
+   *
+   * @return $this
+   */
+  public function setUrlGenerator(UrlGeneratorInterface $url_generator) {
+    $this->urlGenerator = $url_generator;
+    return $this;
+  }
+
+  /**
+   * Sets the link generator.
+   *
    * @param \Drupal\Core\Utility\LinkGeneratorInterface $link_generator
    *   The link generator.
+   *
+   * @return $this
+   */
+  public function setLinkGenerator(LinkGeneratorInterface $link_generator) {
+    $this->linkGenerator = $link_generator;
+    return $this;
+  }
+
+  /**
+   * Sets the theme manager.
+   *
    * @param \Drupal\Core\Theme\ThemeManagerInterface $theme_manager
    *   The theme manager.
    *
    * @return $this
    */
-  public function setDependencies(UrlGeneratorInterface $url_generator, LinkGeneratorInterface $link_generator, ThemeManagerInterface $theme_manager) {
-    $this->urlGenerator = $url_generator;
-    $this->linkGenerator = $link_generator;
+  public function setThemeManager(ThemeManagerInterface $theme_manager) {
     $this->themeManager = $theme_manager;
     return $this;
   }
diff -u b/core/tests/Drupal/Tests/Core/Template/TwigExtensionTest.php b/core/tests/Drupal/Tests/Core/Template/TwigExtensionTest.php
--- b/core/tests/Drupal/Tests/Core/Template/TwigExtensionTest.php
+++ b/core/tests/Drupal/Tests/Core/Template/TwigExtensionTest.php
@@ -31,13 +31,7 @@
       'autoescape' => TRUE,
       'optimizations' => 0
     ));
-    $twig->addExtension((new TwigExtension())
-      ->setDependencies(
-        $this->getMock('Drupal\Core\Routing\UrlGeneratorInterface'),
-        $this->getMock('Drupal\Core\Utility\LinkGeneratorInterface'),
-        $this->getMock('Drupal\Core\Theme\ThemeManagerInterface')
-      )
-    );
+    $twig->addExtension((new TwigExtension())->setUrlGenerator($this->getMock('Drupal\Core\Routing\UrlGeneratorInterface')));
 
     $nodes = $twig->parse($twig->tokenize($template));