diff --git a/composer.json b/composer.json
index 4f226a6e..ffd58789 100644
--- a/composer.json
+++ b/composer.json
@@ -16,8 +16,7 @@
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         "opdavies/sculpin-content-generator-bundle": "@stable",
-        "phpunit/phpunit": "^5.7",
-        "symfony/var-dumper": "^3.3"
+        "phpunit/phpunit": "^5.7"
     },
     "config": {
         "sort-packages": true
diff --git a/composer.lock b/composer.lock
index 59d41839..07536782 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "e82474bc9fc3b53f4c1bdd15eacfd922",
+    "content-hash": "077bd67921b19ca9f0e2dbb0b3389f85",
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         {
             "name": "composer/ca-bundle",
@@ -2264,16 +2264,16 @@
         },
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             "name": "symfony/polyfill-mbstring",
-            "version": "v1.5.0",
+            "version": "v1.6.0",
             "source": {
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                 "url": "https://github.com/symfony/polyfill-mbstring.git",
-                "reference": "7c8fae0ac1d216eb54349e6a8baa57d515fe8803"
+                "reference": "2ec8b39c38cb16674bbf3fea2b6ce5bf117e1296"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/7c8fae0ac1d216eb54349e6a8baa57d515fe8803",
-                "reference": "7c8fae0ac1d216eb54349e6a8baa57d515fe8803",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/2ec8b39c38cb16674bbf3fea2b6ce5bf117e1296",
+                "reference": "2ec8b39c38cb16674bbf3fea2b6ce5bf117e1296",
                 "shasum": ""
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             "require": {
@@ -2285,7 +2285,7 @@
             "type": "library",
             "extra": {
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-                    "dev-master": "1.5-dev"
+                    "dev-master": "1.6-dev"
                 }
             },
             "autoload": {
@@ -2319,7 +2319,7 @@
                 "portable",
                 "shim"
             ],
-            "time": "2017-06-14T15:44:48+00:00"
+            "time": "2017-10-11T12:05:26+00:00"
         },
         {
             "name": "symfony/process",
@@ -4130,74 +4130,6 @@
             "homepage": "https://github.com/sebastianbergmann/version",
             "time": "2016-10-03T07:35:21+00:00"
         },
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-            "name": "symfony/var-dumper",
-            "version": "v3.3.10",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/symfony/var-dumper.git",
-                "reference": "03e3693a36701f1c581dd24a6d6eea2eba2113f6"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/symfony/var-dumper/zipball/03e3693a36701f1c581dd24a6d6eea2eba2113f6",
-                "reference": "03e3693a36701f1c581dd24a6d6eea2eba2113f6",
-                "shasum": ""
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-                "symfony/polyfill-mbstring": "~1.0"
-            },
-            "conflict": {
-                "phpunit/phpunit": "<4.8.35|<5.4.3,>=5.0"
-            },
-            "require-dev": {
-                "ext-iconv": "*",
-                "twig/twig": "~1.34|~2.4"
-            },
-            "suggest": {
-                "ext-iconv": "To convert non-UTF-8 strings to UTF-8 (or symfony/polyfill-iconv in case ext-iconv cannot be used).",
-                "ext-symfony_debug": ""
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "3.3-dev"
-                }
-            },
-            "autoload": {
-                "files": [
-                    "Resources/functions/dump.php"
-                ],
-                "psr-4": {
-                    "Symfony\\Component\\VarDumper\\": ""
-                },
-                "exclude-from-classmap": [
-                    "/Tests/"
-                ]
-            },
-            "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 mechanism for exploring and dumping PHP variables",
-            "homepage": "https://symfony.com",
-            "keywords": [
-                "debug",
-                "dump"
-            ],
-            "time": "2017-10-02T06:42:24+00:00"
-        },
         {
             "name": "webmozart/assert",
             "version": "1.2.0",