diff --git a/composer.json b/composer.json
index 15dd7c76b..5b639ba75 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,6 @@
         "symfony/form": "^4.0",
         "symfony/framework-bundle": "^4.0",
         "symfony/monolog-bundle": "^3.1",
-        "symfony/polyfill-apcu": "^1.5",
         "symfony/security-bundle": "^4.0",
         "symfony/swiftmailer-bundle": "^3.1",
         "symfony/translation": "^4.0",
diff --git a/composer.lock b/composer.lock
index 6c2fba0d3..da786b435 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,10 +1,10 @@
 {
     "_readme": [
         "This file locks the dependencies of your project to a known state",
-        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "d2e8ba26a8d38410e01d0a8c2e47bc27",
+    "content-hash": "cf0ef8f8903cd795a2323fc9595bf018",
     "packages": [
         {
             "name": "composer/ca-bundle",
@@ -3288,62 +3288,6 @@
             ],
             "time": "2018-01-18T22:19:33+00:00"
         },
-        {
-            "name": "symfony/polyfill-apcu",
-            "version": "v1.7.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/symfony/polyfill-apcu.git",
-                "reference": "e8ae2136ddb53dea314df56fcd88e318ab936c00"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-apcu/zipball/e8ae2136ddb53dea314df56fcd88e318ab936c00",
-                "reference": "e8ae2136ddb53dea314df56fcd88e318ab936c00",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3.3"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.7-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Apcu\\": ""
-                },
-                "files": [
-                    "bootstrap.php"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Nicolas Grekas",
-                    "email": "p@tchwork.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
-                }
-            ],
-            "description": "Symfony polyfill backporting apcu_* functions to lower PHP versions",
-            "homepage": "https://symfony.com",
-            "keywords": [
-                "apcu",
-                "compatibility",
-                "polyfill",
-                "portable",
-                "shim"
-            ],
-            "time": "2018-01-30T19:27:44+00:00"
-        },
         {
             "name": "symfony/polyfill-intl-icu",
             "version": "v1.7.0",
diff --git a/symfony.lock b/symfony.lock
index d350246c3..783ea94d8 100644
--- a/symfony.lock
+++ b/symfony.lock
@@ -263,9 +263,6 @@
             "ref": "0a66a0097def4db1cd03bcb3d4a268440ae4cb47"
         }
     },
-    "symfony/polyfill-apcu": {
-        "version": "v1.6.0"
-    },
     "symfony/polyfill-intl-icu": {
         "version": "v1.6.0"
     },