diff --git a/composer.json b/composer.json
index 7d35765a..a86240f0 100644
--- a/composer.json
+++ b/composer.json
@@ -14,8 +14,8 @@
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-        "symfony/console": "~2.7",
-        "symfony/yaml": ">=3.3"
+        "symfony/console": "^4.0",
+        "symfony/yaml": "^4.0"
     },
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         "psr-0": {"Joomlatools\\": "src/"}
diff --git a/composer.lock b/composer.lock
index 4b726765..4281e123 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,88 +4,48 @@
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     ],
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+    "content-hash": "54a0897623af8f89fc1c80ada668fb7a",
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-            "license": [
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-                    "homepage": "http://www.php-fig.org/"
-                }
-            ],
-            "description": "Common interface for logging libraries",
-            "homepage": "https://github.com/php-fig/log",
-            "keywords": [
-                "log",
-                "psr",
-                "psr-3"
-            ],
-            "time": "2016-10-10 12:19:37"
-        },
         {
             "name": "symfony/console",
-            "version": "v2.8.28",
+            "version": "v4.0.8",
             "source": {
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-                "reference": "f81549d2c5fdee8d711c9ab3c7e7362353ea5853"
+                "reference": "aad9a6fe47319f22748fd764f52d3a7ca6fa6b64"
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             "dist": {
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-                "reference": "f81549d2c5fdee8d711c9ab3c7e7362353ea5853",
+                "url": "https://api.github.com/repos/symfony/console/zipball/aad9a6fe47319f22748fd764f52d3a7ca6fa6b64",
+                "reference": "aad9a6fe47319f22748fd764f52d3a7ca6fa6b64",
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             },
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-                "php": ">=5.3.9",
-                "symfony/debug": "^2.7.2|~3.0.0",
+                "php": "^7.1.3",
                 "symfony/polyfill-mbstring": "~1.0"
             },
+            "conflict": {
+                "symfony/dependency-injection": "<3.4",
+                "symfony/process": "<3.3"
+            },
             "require-dev": {
                 "psr/log": "~1.0",
-                "symfony/event-dispatcher": "~2.1|~3.0.0",
-                "symfony/process": "~2.1|~3.0.0"
+                "symfony/config": "~3.4|~4.0",
+                "symfony/dependency-injection": "~3.4|~4.0",
+                "symfony/event-dispatcher": "~3.4|~4.0",
+                "symfony/lock": "~3.4|~4.0",
+                "symfony/process": "~3.4|~4.0"
             },
             "suggest": {
                 "psr/log": "For using the console logger",
                 "symfony/event-dispatcher": "",
+                "symfony/lock": "",
                 "symfony/process": ""
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.8-dev"
+                    "dev-master": "4.0-dev"
                 }
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             "autoload": {
@@ -112,77 +72,20 @@
             ],
             "description": "Symfony Console Component",
             "homepage": "https://symfony.com",
-            "time": "2017-10-01T21:00:16+00:00"
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-            "require-dev": {
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-                "symfony/http-kernel": "~2.8|~3.0"
-            },
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-            "extra": {
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-                    "dev-master": "3.0-dev"
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-            "autoload": {
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-                },
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-                    "/Tests/"
-                ]
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-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
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-            ],
-            "authors": [
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-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
-                }
-            ],
-            "description": "Symfony Debug Component",
-            "homepage": "https://symfony.com",
-            "time": "2016-07-30T07:22:48+00:00"
+            "time": "2018-04-03T05:24:00+00:00"
         },
         {
             "name": "symfony/polyfill-mbstring",
-            "version": "v1.6.0",
+            "version": "v1.7.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-mbstring.git",
-                "reference": "2ec8b39c38cb16674bbf3fea2b6ce5bf117e1296"
+                "reference": "78be803ce01e55d3491c1397cf1c64beb9c1b63b"
             },
             "dist": {
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-                "reference": "2ec8b39c38cb16674bbf3fea2b6ce5bf117e1296",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/78be803ce01e55d3491c1397cf1c64beb9c1b63b",
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@@ -194,7 +97,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.6-dev"
+                    "dev-master": "1.7-dev"
                 }
             },
             "autoload": {
@@ -228,27 +131,30 @@
                 "portable",
                 "shim"
             ],
-            "time": "2017-10-11T12:05:26+00:00"
+            "time": "2018-01-30T19:27:44+00:00"
         },
         {
             "name": "symfony/yaml",
-            "version": "v3.3.10",
+            "version": "v4.0.8",
             "source": {
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                 "url": "https://github.com/symfony/yaml.git",
-                "reference": "8c7bf1e7d5d6b05a690b715729cb4cd0c0a99c46"
+                "reference": "8b34ebb5989df61cbd77eff29a02c4db9ac1069c"
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-                "reference": "8c7bf1e7d5d6b05a690b715729cb4cd0c0a99c46",
+                "url": "https://api.github.com/repos/symfony/yaml/zipball/8b34ebb5989df61cbd77eff29a02c4db9ac1069c",
+                "reference": "8b34ebb5989df61cbd77eff29a02c4db9ac1069c",
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             },
             "require": {
-                "php": "^5.5.9|>=7.0.8"
+                "php": "^7.1.3"
+            },
+            "conflict": {
+                "symfony/console": "<3.4"
             },
             "require-dev": {
-                "symfony/console": "~2.8|~3.0"
+                "symfony/console": "~3.4|~4.0"
             },
             "suggest": {
                 "symfony/console": "For validating YAML files using the lint command"
@@ -256,7 +162,7 @@
             "type": "library",
             "extra": {
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-                    "dev-master": "3.3-dev"
+                    "dev-master": "4.0-dev"
                 }
             },
             "autoload": {
@@ -283,7 +189,7 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2017-10-05T14:43:42+00:00"
+            "time": "2018-04-03T05:24:00+00:00"
         }
     ],
     "packages-dev": [],
@@ -292,6 +198,8 @@
     "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
-    "platform": [],
+    "platform": {
+        "php": ">=5.6"
+    },
     "platform-dev": []
 }