diff --git a/composer.json b/composer.json
index 8e74c72bca..a3098c8585 100644
--- a/composer.json
+++ b/composer.json
@@ -68,7 +68,7 @@
         "monolog/monolog": "~1.3",
         "propel/propel1": "1.6.*",
         "ircmaxell/password-compat": "1.0.*",
-        "ocramius/proxy-manager": ">=0.3.1,<0.4-dev"
+        "ocramius/proxy-manager": ">=0.3.1,<0.5-dev"
     },
     "autoload": {
         "psr-0": { "Symfony\\": "src/" },
diff --git a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/Fixtures/php/lazy_service_structure.txt b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/Fixtures/php/lazy_service_structure.txt
index e1831fd9fa..4205e71086 100644
--- a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/Fixtures/php/lazy_service_structure.txt
+++ b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/Fixtures/php/lazy_service_structure.txt
@@ -23,5 +23,5 @@ class ProjectServiceContainer extends Container
     }
 }
 
-class stdClass_%s extends \stdClass implements \ProxyManager\Proxy\LazyLoadingInterface, \ProxyManager\Proxy\ValueHolderInterface
+class stdClass_%s extends \stdClass implements \ProxyManager\Proxy\VirtualProxyInterface
 {%a}%A
\ No newline at end of file
diff --git a/src/Symfony/Bridge/ProxyManager/composer.json b/src/Symfony/Bridge/ProxyManager/composer.json
index 7d399b8b33..3b0f73666b 100644
--- a/src/Symfony/Bridge/ProxyManager/composer.json
+++ b/src/Symfony/Bridge/ProxyManager/composer.json
@@ -18,7 +18,7 @@
     "require": {
         "php": ">=5.3.3",
         "symfony/dependency-injection": "~2.3",
-        "ocramius/proxy-manager": ">=0.3.1,<0.4-dev"
+        "ocramius/proxy-manager": ">=0.3.1,<0.5-dev"
     },
     "autoload": {
         "psr-0": {