diff --git a/UPGRADE-2.8.md b/UPGRADE-2.8.md
index 990382602b..957f35b505 100644
--- a/UPGRADE-2.8.md
+++ b/UPGRADE-2.8.md
@@ -630,3 +630,31 @@ HttpFoundation
    ```php
    $request->query->get('foo')[bar];
    ```
+
+Routing
+-------
+
+ * Deprecated the hardcoded value for the `$referenceType` argument of the `UrlGeneratorInterface::generate` method.
+   Use the constants defined in the `UrlGeneratorInterface` instead.
+
+   Before:
+
+   ```php
+   // url generated in controller
+   $this->generateUrl('blog_show', array('slug' => 'my-blog-post'), true);
+
+   // url generated in @router service
+   $router->generate('blog_show', array('slug' => 'my-blog-post'), true);
+   ```
+
+   After:
+
+   ```php
+   use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
+
+   // url generated in controller
+   $this->generateUrl('blog_show', array('slug' => 'my-blog-post'), UrlGeneratorInterface::ABSOLUTE_URL);
+
+   // url generated in @router service
+   $router->generate('blog_show', array('slug' => 'my-blog-post'), UrlGeneratorInterface::ABSOLUTE_URL);
+   ```
\ No newline at end of file
diff --git a/UPGRADE-3.0.md b/UPGRADE-3.0.md
index 08796bd419..b8b4a96223 100644
--- a/UPGRADE-3.0.md
+++ b/UPGRADE-3.0.md
@@ -899,6 +899,30 @@ UPGRADE FROM 2.x to 3.0
  * The `getMatcherDumperInstance()` and `getGeneratorDumperInstance()` methods in the
    `Symfony\Component\Routing\Router` have been changed from `public` to `protected`.
 
+ * Use the constants defined in the UrlGeneratorInterface for the $referenceType argument of the UrlGeneratorInterface::generate method.
+
+   Before:
+
+   ```php
+   // url generated in controller
+   $this->generateUrl('blog_show', array('slug' => 'my-blog-post'), true);
+
+   // url generated in @router service
+   $router->generate('blog_show', array('slug' => 'my-blog-post'), true);
+   ```
+
+   After:
+
+   ```php
+   use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
+
+   // url generated in controller
+   $this->generateUrl('blog_show', array('slug' => 'my-blog-post'), UrlGeneratorInterface::ABSOLUTE_URL);
+
+   // url generated in @router service
+   $router->generate('blog_show', array('slug' => 'my-blog-post'), UrlGeneratorInterface::ABSOLUTE_URL);
+   ```
+
 ### Security
 
  * The `Resources/` directory was moved to `Core/Resources/`
diff --git a/src/Symfony/Component/Routing/CHANGELOG.md b/src/Symfony/Component/Routing/CHANGELOG.md
index 7f5d9f0ec0..04ac1d3198 100644
--- a/src/Symfony/Component/Routing/CHANGELOG.md
+++ b/src/Symfony/Component/Routing/CHANGELOG.md
@@ -7,6 +7,22 @@ CHANGELOG
  * allowed specifying a directory to recursively load all routing configuration files it contains
  * Added ObjectRouteLoader and ServiceRouteLoader that allow routes to be loaded
    by calling a method on an object/service.
+ * [DEPRECATION] Deprecated the hardcoded value for the `$referenceType` argument of the `UrlGeneratorInterface::generate` method.
+   Use the constants defined in the `UrlGeneratorInterface` instead.
+
+   Before:
+
+   ```php
+   $router->generate('blog_show', array('slug' => 'my-blog-post'), true);
+   ```
+
+   After:
+
+   ```php
+   use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
+
+   $router->generate('blog_show', array('slug' => 'my-blog-post'), UrlGeneratorInterface::ABSOLUTE_URL);
+   ```
 
 2.5.0
 -----