diff --git a/composer.json b/composer.json
index c8786b66..04aa108a 100644
--- a/composer.json
+++ b/composer.json
@@ -1,15 +1,35 @@
 {
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diff --git a/composer.lock b/composer.lock
index 6852cb17..ed5e8904 100644
--- a/composer.lock
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@@ -503,20 +508,20 @@
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@@ -553,7 +558,7 @@
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@@ -781,108 +786,6 @@
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@@ -1037,16 +934,16 @@
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+            "time": "2018-08-03T10:42:44+00:00"
         },
         {
             "name": "symfony/yaml",
-            "version": "v2.8.39",
+            "version": "v3.4.15",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/yaml.git",
-                "reference": "d20bd2bdee063863e426297af41eda45ccad6f7e"
+                "reference": "c2f4812ead9f847cb69e90917ca7502e6892d6b8"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/yaml/zipball/d20bd2bdee063863e426297af41eda45ccad6f7e",
-                "reference": "d20bd2bdee063863e426297af41eda45ccad6f7e",
+                "url": "https://api.github.com/repos/symfony/yaml/zipball/c2f4812ead9f847cb69e90917ca7502e6892d6b8",
+                "reference": "c2f4812ead9f847cb69e90917ca7502e6892d6b8",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.9"
+                "php": "^5.5.9|>=7.0.8",
+                "symfony/polyfill-ctype": "~1.8"
+            },
+            "conflict": {
+                "symfony/console": "<3.4"
+            },
+            "require-dev": {
+                "symfony/console": "~3.4|~4.0"
+            },
+            "suggest": {
+                "symfony/console": "For validating YAML files using the lint command"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.8-dev"
+                    "dev-master": "3.4-dev"
                 }
             },
             "autoload": {
@@ -2691,47 +2622,7 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2018-04-08T07:53:13+00:00"
-        },
-        {
-            "name": "theseer/tokenizer",
-            "version": "1.1.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/theseer/tokenizer.git",
-                "reference": "cb2f008f3f05af2893a87208fe6a6c4985483f8b"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/theseer/tokenizer/zipball/cb2f008f3f05af2893a87208fe6a6c4985483f8b",
-                "reference": "cb2f008f3f05af2893a87208fe6a6c4985483f8b",
-                "shasum": ""
-            },
-            "require": {
-                "ext-dom": "*",
-                "ext-tokenizer": "*",
-                "ext-xmlwriter": "*",
-                "php": "^7.0"
-            },
-            "type": "library",
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Arne Blankerts",
-                    "email": "arne@blankerts.de",
-                    "role": "Developer"
-                }
-            ],
-            "description": "A small library for converting tokenized PHP source code into XML and potentially other formats",
-            "time": "2017-04-07T12:08:54+00:00"
+            "time": "2018-08-10T07:34:36+00:00"
         },
         {
             "name": "webmozart/assert",
@@ -2792,5 +2683,8 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": [],
-    "platform-dev": []
+    "platform-dev": [],
+    "platform-overrides": {
+        "php": "5.6.4"
+    }
 }