diff --git a/src/Symfony/Bundle/WebServerBundle/composer.json b/src/Symfony/Bundle/WebServerBundle/composer.json
index 709b0f5dfc..c87dab356e 100644
--- a/src/Symfony/Bundle/WebServerBundle/composer.json
+++ b/src/Symfony/Bundle/WebServerBundle/composer.json
@@ -18,6 +18,7 @@
     "require": {
         "php": ">=5.5.9",
         "symfony/console": "~2.8.8|~3.0.8|~3.1.2|~3.2",
+        "symfony/http-kernel": "~2.8|~3.0",
         "symfony/process": "~2.8|~3.0"
     },
     "autoload": {
@@ -26,6 +27,9 @@
             "/Tests/"
         ]
     },
+    "conflict": {
+        "symfony/dependency-injection": "<3.3"
+    },
     "minimum-stability": "dev",
     "extra": {
         "branch-alias": {