diff --git a/composer.json b/composer.json
index 202e141f36c28..1ef01f1972e9e 100644
--- a/composer.json
+++ b/composer.json
@@ -30,8 +30,7 @@
         "symfony/polyfill-intl-icu": "~1.0",
         "symfony/polyfill-mbstring": "~1.0",
         "symfony/polyfill-php56": "~1.0",
-        "symfony/polyfill-php70": "~1.0",
-        "symfony/polyfill-util": "~1.0"
+        "symfony/polyfill-php70": "~1.0"
     },
     "replace": {
         "symfony/asset": "self.version",
diff --git a/src/Symfony/Component/Security/composer.json b/src/Symfony/Component/Security/composer.json
index a9760c11ddf48..bd40fd48511d6 100644
--- a/src/Symfony/Component/Security/composer.json
+++ b/src/Symfony/Component/Security/composer.json
@@ -22,7 +22,6 @@
         "symfony/http-kernel": "~3.3",
         "symfony/polyfill-php56": "~1.0",
         "symfony/polyfill-php70": "~1.0",
-        "symfony/polyfill-util": "~1.0",
         "symfony/property-access": "~2.8|~3.0"
     },
     "replace": {