diff --git a/composer.json b/composer.json
index 8919bd9..8c2cd46 100644
--- a/composer.json
+++ b/composer.json
@@ -22,11 +22,11 @@
         "league/plates": "~3.1",
         "myclabs/deep-copy": "^1.5",
         "php": ">=5.6",
-        "symfony/console": "~3.0",
+        "symfony/console": "^3.3",
+        "symfony/http-foundation": "^3.3",
+        "symfony/process": "^3.3",
         "webuni/commonmark-table-extension": "0.6.*",
-        "webuni/front-matter": "^1.0.0",
-        "symfony/process": "^3.1",
-        "symfony/http-foundation": "^3.3"
+        "webuni/front-matter": "^1.0.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/composer.lock b/composer.lock
index 5278b1f..e2683ed 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": "6a51573c0d86b29a7c775990f40199f1",
+    "content-hash": "9e938ead59846576154220013f069892",
     "packages": [
         {
             "name": "guzzlehttp/guzzle",
@@ -189,16 +189,16 @@
         },
         {
             "name": "league/commonmark",
-            "version": "0.15.6",
+            "version": "0.15.7",
             "source": {
                 "type": "git",
                 "url": "https://github.com/thephpleague/commonmark.git",
-                "reference": "91742543c25fecedc84a4883d2919213e04a73b7"
+                "reference": "36d82f166e441dfa28643f8d01dd8bdd3a579adf"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/thephpleague/commonmark/zipball/91742543c25fecedc84a4883d2919213e04a73b7",
-                "reference": "91742543c25fecedc84a4883d2919213e04a73b7",
+                "url": "https://api.github.com/repos/thephpleague/commonmark/zipball/36d82f166e441dfa28643f8d01dd8bdd3a579adf",
+                "reference": "36d82f166e441dfa28643f8d01dd8bdd3a579adf",
                 "shasum": ""
             },
             "require": {
@@ -254,7 +254,7 @@
                 "markdown",
                 "parser"
             ],
-            "time": "2017-08-08T11:47:33+00:00"
+            "time": "2017-10-26T15:41:07+00:00"
         },
         {
             "name": "league/plates",
@@ -313,37 +313,40 @@
         },
         {
             "name": "myclabs/deep-copy",
-            "version": "1.6.1",
+            "version": "1.7.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "8e6e04167378abf1ddb4d3522d8755c5fd90d102"
+                "reference": "3b8a3a99ba1f6a3952ac2747d989303cbd6b7a3e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/8e6e04167378abf1ddb4d3522d8755c5fd90d102",
-                "reference": "8e6e04167378abf1ddb4d3522d8755c5fd90d102",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/3b8a3a99ba1f6a3952ac2747d989303cbd6b7a3e",
+                "reference": "3b8a3a99ba1f6a3952ac2747d989303cbd6b7a3e",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.4.0"
+                "php": "^5.6 || ^7.0"
             },
             "require-dev": {
-                "doctrine/collections": "1.*",
-                "phpunit/phpunit": "~4.1"
+                "doctrine/collections": "^1.0",
+                "doctrine/common": "^2.6",
+                "phpunit/phpunit": "^4.1"
             },
             "type": "library",
             "autoload": {
                 "psr-4": {
                     "DeepCopy\\": "src/DeepCopy/"
-                }
+                },
+                "files": [
+                    "src/DeepCopy/deep_copy.php"
+                ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "MIT"
             ],
             "description": "Create deep copies (clones) of your objects",
-            "homepage": "https://github.com/myclabs/DeepCopy",
             "keywords": [
                 "clone",
                 "copy",
@@ -351,7 +354,7 @@
                 "object",
                 "object graph"
             ],
-            "time": "2017-04-12T18:52:22+00:00"
+            "time": "2017-10-19T19:58:43+00:00"
         },
         {
             "name": "psr/http-message",