diff --git a/src/Symfony/Bundle/FrameworkBundle/composer.json b/src/Symfony/Bundle/FrameworkBundle/composer.json
index bcfce7b707..8fdc4caf78 100644
--- a/src/Symfony/Bundle/FrameworkBundle/composer.json
+++ b/src/Symfony/Bundle/FrameworkBundle/composer.json
@@ -23,7 +23,7 @@
         "symfony/event-dispatcher": "~2.5",
         "symfony/finder": "~2.0,>=2.0.5",
         "symfony/http-foundation": "~2.4.9|~2.5,>=2.5.4",
-        "symfony/http-kernel": "~2.7",
+        "symfony/http-kernel": "~2.7,>=2.7.15",
         "symfony/filesystem": "~2.3",
         "symfony/routing": "~2.6,>2.6.4",
         "symfony/security-core": "~2.6.13|~2.7.9|~2.8",
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/ValidateRequestListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/ValidateRequestListenerTest.php
index 0f6db8d880..78874ab73f 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/ValidateRequestListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/ValidateRequestListenerTest.php
@@ -13,7 +13,6 @@ namespace Symfony\Component\HttpKernel\Tests\EventListener;
 
 use Symfony\Component\EventDispatcher\EventDispatcher;
 use Symfony\Component\HttpFoundation\Exception\ConflictingHeadersException;
-use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\EventListener\ValidateRequestListener;
 use Symfony\Component\HttpKernel\Event\GetResponseEvent;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
diff --git a/src/Symfony/Component/HttpKernel/composer.json b/src/Symfony/Component/HttpKernel/composer.json
index d1ae16be54..2c7c829989 100644
--- a/src/Symfony/Component/HttpKernel/composer.json
+++ b/src/Symfony/Component/HttpKernel/composer.json
@@ -18,7 +18,7 @@
     "require": {
         "php": ">=5.3.9",
         "symfony/event-dispatcher": "~2.6,>=2.6.7",
-        "symfony/http-foundation": "~2.5,>=2.5.4",
+        "symfony/http-foundation": "~2.7,>=2.7.15",
         "symfony/debug": "~2.6,>=2.6.2",
         "psr/log": "~1.0"
     },