diff --git a/UPGRADE-3.3.md b/UPGRADE-3.3.md
new file mode 100644
index 000000000000..758941e2eb59
--- /dev/null
+++ b/UPGRADE-3.3.md
@@ -0,0 +1,8 @@
+UPGRADE FROM 3.2 to 3.3
+=======================
+
+ClassLoader
+-----------
+
+ * The ApcClassLoader, WinCacheClassLoader and XcacheClassLoader classes have been deprecated
+   in favor of the `--apcu-autoloader` option introduced in composer 1.3
diff --git a/UPGRADE-4.0.md b/UPGRADE-4.0.md
index 483b7e6ed144..7463425be81a 100644
--- a/UPGRADE-4.0.md
+++ b/UPGRADE-4.0.md
@@ -1,6 +1,12 @@
 UPGRADE FROM 3.x to 4.0
 =======================
 
+ClassLoader
+-----------
+
+ * The ApcClassLoader, WinCacheClassLoader and XcacheClassLoader classes have been removed
+   in favor of the `--apcu-autoloader` option introduced in composer 1.3
+
 Console
 -------
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/config/services.xml b/src/Symfony/Bundle/FrameworkBundle/Resources/config/services.xml
index f07f5261bb40..dbc830e60aa3 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/config/services.xml
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/config/services.xml
@@ -32,7 +32,6 @@
                 <argument>Symfony\Component\HttpFoundation\Request</argument>
                 <argument>Symfony\Component\HttpKernel\Kernel</argument>
                 <argument>Symfony\Component\ClassLoader\ClassCollectionLoader</argument>
-                <argument>Symfony\Component\ClassLoader\ApcClassLoader</argument>
             </argument>
         </service>
 
diff --git a/src/Symfony/Component/ClassLoader/ApcClassLoader.php b/src/Symfony/Component/ClassLoader/ApcClassLoader.php
index 5500e3628902..0d899842b3c9 100644
--- a/src/Symfony/Component/ClassLoader/ApcClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/ApcClassLoader.php
@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\ClassLoader;
 
+@trigger_error('The '.__NAMESPACE__.'\ApcClassLoader class is deprecated since version 3.3 and will be removed in 4.0. Use `composer install --apcu-autoloader` instead.', E_USER_DEPRECATED);
+
 /**
  * ApcClassLoader implements a wrapping autoloader cached in APC for PHP 5.3.
  *
@@ -44,6 +46,8 @@
  *
  * @author Fabien Potencier <fabien@symfony.com>
  * @author Kris Wallsmith <kris@symfony.com>
+ *
+ * @deprecated since version 3.3, to be removed in 4.0. Use `composer install --apcu-autoloader` instead.
  */
 class ApcClassLoader
 {
diff --git a/src/Symfony/Component/ClassLoader/CHANGELOG.md b/src/Symfony/Component/ClassLoader/CHANGELOG.md
index 64ef8d9c9bcf..1753ce6c3de4 100644
--- a/src/Symfony/Component/ClassLoader/CHANGELOG.md
+++ b/src/Symfony/Component/ClassLoader/CHANGELOG.md
@@ -1,6 +1,12 @@
 CHANGELOG
 =========
 
+3.3.0
+-----
+
+ * The ApcClassLoader, WinCacheClassLoader and XcacheClassLoader classes have been deprecated
+   in favor of the `--apcu-autoloader` option introduced in composer 1.3
+
 3.0.0
 -----
 
diff --git a/src/Symfony/Component/ClassLoader/Tests/ApcClassLoaderTest.php b/src/Symfony/Component/ClassLoader/Tests/ApcClassLoaderTest.php
index e96ba954087c..e1b84f611575 100644
--- a/src/Symfony/Component/ClassLoader/Tests/ApcClassLoaderTest.php
+++ b/src/Symfony/Component/ClassLoader/Tests/ApcClassLoaderTest.php
@@ -14,6 +14,9 @@
 use Symfony\Component\ClassLoader\ApcClassLoader;
 use Symfony\Component\ClassLoader\ClassLoader;
 
+/**
+ * @group legacy
+ */
 class ApcClassLoaderTest extends \PHPUnit_Framework_TestCase
 {
     protected function setUp()
diff --git a/src/Symfony/Component/ClassLoader/WinCacheClassLoader.php b/src/Symfony/Component/ClassLoader/WinCacheClassLoader.php
index b95a1d79873a..76b13d39a4d8 100644
--- a/src/Symfony/Component/ClassLoader/WinCacheClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/WinCacheClassLoader.php
@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\ClassLoader;
 
+@trigger_error('The '.__NAMESPACE__.'\WinCacheClassLoader class is deprecated since version 3.3 and will be removed in 4.0. Use `composer install --apcu-autoloader` instead.', E_USER_DEPRECATED);
+
 /**
  * WinCacheClassLoader implements a wrapping autoloader cached in WinCache.
  *
@@ -43,6 +45,8 @@
  * @author Fabien Potencier <fabien@symfony.com>
  * @author Kris Wallsmith <kris@symfony.com>
  * @author Artem Ryzhkov <artem@smart-core.org>
+ *
+ * @deprecated since version 3.3, to be removed in 4.0. Use `composer install --apcu-autoloader` instead.
  */
 class WinCacheClassLoader
 {
diff --git a/src/Symfony/Component/ClassLoader/XcacheClassLoader.php b/src/Symfony/Component/ClassLoader/XcacheClassLoader.php
index bf309a6924d7..d3ea09b2c0bd 100644
--- a/src/Symfony/Component/ClassLoader/XcacheClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/XcacheClassLoader.php
@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\ClassLoader;
 
+@trigger_error('The '.__NAMESPACE__.'\XcacheClassLoader class is deprecated since version 3.3 and will be removed in 4.0. Use `composer install --apcu-autoloader` instead.', E_USER_DEPRECATED);
+
 /**
  * XcacheClassLoader implements a wrapping autoloader cached in XCache for PHP 5.3.
  *
@@ -43,6 +45,8 @@
  * @author Fabien Potencier <fabien@symfony.com>
  * @author Kris Wallsmith <kris@symfony.com>
  * @author Kim Hemsø Rasmussen <kimhemsoe@gmail.com>
+ *
+ * @deprecated since version 3.3, to be removed in 4.0. Use `composer install --apcu-autoloader` instead.
  */
 class XcacheClassLoader
 {