diff --git a/src/Symfony/Component/HttpKernel/composer.json b/src/Symfony/Component/HttpKernel/composer.json
index 5f6c7c9f401d5..66e50ef80c642 100644
--- a/src/Symfony/Component/HttpKernel/composer.json
+++ b/src/Symfony/Component/HttpKernel/composer.json
@@ -37,7 +37,8 @@
         "symfony/stopwatch": "~2.8|~3.0",
         "symfony/templating": "~2.8|~3.0",
         "symfony/translation": "~2.8|~3.0",
-        "symfony/var-dumper": "~3.2"
+        "symfony/var-dumper": "~3.2",
+        "psr/cache": "~1.0"
     },
     "conflict": {
         "symfony/config": "<2.8"