diff --git a/composer.json b/composer.json
index 84829e99e2f6cb17fd01fa8d0db0cc38a8eb8f59..76f636415c6001f09a1a177225607cd55930c5fa 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,10 @@
 	},
 	"config": {
 		"optimize-autoloader": true,
-		"bin-dir": "bin"
+		"bin-dir": "bin",
+		"platform": {
+			"php": "5.5"
+		}
 	},
 	"require": {
 		"php": ">=5.5.0",
@@ -43,13 +46,20 @@
 		"typo3/cms-composer-installers": "^1.2.8",
 		"psr/http-message": "~1.0",
 		"cogpowered/finediff": "~0.3.1",
-		"mso/idna-convert": "^0.9.1"
+		"mso/idna-convert": "^0.9.1",
+		"symfony/debug": "^2.7"
 	},
 	"require-dev": {
 		"phpunit/phpunit": "~4.8.0",
 		"mikey179/vfsStream": "1.6.0",
 		"symfony/polyfill-mbstring": "~1.0",
-		"friendsofphp/php-cs-fixer": "^2.2"
+		"friendsofphp/php-cs-fixer": "^2.2",
+		"symfony/stopwatch": "^2.8",
+		"symfony/process": "^2.8",
+		"symfony/options-resolver": "^2.8",
+		"symfony/filesystem": "^2.8",
+		"symfony/event-dispatcher": "^2.8",
+		"symfony/yaml": "^2.8"
 	},
 	"suggest": {
 		"ext-gd": "GDlib/Freetype is required for building images with text (GIFBUILDER) and can also be used to scale images",
diff --git a/composer.lock b/composer.lock
index 7213555809a7257b1f56cce5d45fba621d98f7ac..ee73f54b767ab4b7efcf10efa15e33650a90f4ab 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
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-    "content-hash": "198386fb91794bf43dcaaa4460aa81d6",
+    "content-hash": "8a848bcc3f7c0786198dd100463bc7cc",
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             "name": "cogpowered/finediff",
@@ -489,21 +489,21 @@
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             "name": "symfony/console",
-            "version": "v2.8.14",
+            "version": "v2.8.31",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "a871ba00e0f604dceac64c56c27f99fbeaf4854e"
+                "reference": "7cad097cf081c0ab3d0322cc38d34ee80484d86f"
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-                "reference": "a871ba00e0f604dceac64c56c27f99fbeaf4854e",
+                "url": "https://api.github.com/repos/symfony/console/zipball/7cad097cf081c0ab3d0322cc38d34ee80484d86f",
+                "reference": "7cad097cf081c0ab3d0322cc38d34ee80484d86f",
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             "require": {
                 "php": ">=5.3.9",
-                "symfony/debug": "~2.7,>=2.7.2|~3.0.0",
+                "symfony/debug": "^2.7.2|~3.0.0",
                 "symfony/polyfill-mbstring": "~1.0"
             },
             "require-dev": {
@@ -546,37 +546,37 @@
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             "description": "Symfony Console Component",
             "homepage": "https://symfony.com",
-            "time": "2016-11-15T23:02:12+00:00"
+            "time": "2017-11-16T15:20:19+00:00"
         },
         {
             "name": "symfony/debug",
-            "version": "v3.0.9",
+            "version": "v2.8.31",
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                 "type": "git",
                 "url": "https://github.com/symfony/debug.git",
-                "reference": "697c527acd9ea1b2d3efac34d9806bf255278b0a"
+                "reference": "a0a29e9867debabdace779a20a9385c623a23bbd"
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-                "reference": "697c527acd9ea1b2d3efac34d9806bf255278b0a",
+                "url": "https://api.github.com/repos/symfony/debug/zipball/a0a29e9867debabdace779a20a9385c623a23bbd",
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+                "php": ">=5.3.9",
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             },
             "require-dev": {
-                "symfony/class-loader": "~2.8|~3.0",
-                "symfony/http-kernel": "~2.8|~3.0"
+                "symfony/class-loader": "~2.2|~3.0.0",
+                "symfony/http-kernel": "~2.3.24|~2.5.9|^2.6.2|~3.0.0"
             },
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             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.0-dev"
+                    "dev-master": "2.8-dev"
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@@ -603,20 +603,20 @@
             ],
             "description": "Symfony Debug Component",
             "homepage": "https://symfony.com",
-            "time": "2016-07-30T07:22:48+00:00"
+            "time": "2017-10-24T13:48:52+00:00"
         },
         {
             "name": "symfony/finder",
-            "version": "v2.8.14",
+            "version": "v2.8.31",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/finder.git",
-                "reference": "0023b024363dfc0cd21262e556f25a291fe8d7fd"
+                "reference": "efeceae6a05a9b2fcb3391333f1d4a828ff44ab8"
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@@ -652,7 +652,7 @@
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             "description": "Symfony Finder Component",
             "homepage": "https://symfony.com",
-            "time": "2016-11-03T07:52:58+00:00"
+            "time": "2017-11-05T15:25:56+00:00"
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@@ -2245,27 +2245,27 @@
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             "name": "symfony/event-dispatcher",
-            "version": "v3.2.2",
+            "version": "v2.8.31",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/event-dispatcher.git",
-                "reference": "9137eb3a3328e413212826d63eeeb0217836e2b6"
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-                "reference": "9137eb3a3328e413212826d63eeeb0217836e2b6",
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-                "php": ">=5.5.9"
+                "php": ">=5.3.9"
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-                "symfony/config": "~2.8|~3.0",
-                "symfony/dependency-injection": "~2.8|~3.0",
-                "symfony/expression-language": "~2.8|~3.0",
-                "symfony/stopwatch": "~2.8|~3.0"
+                "symfony/config": "^2.0.5|~3.0.0",
+                "symfony/dependency-injection": "~2.6|~3.0.0",
+                "symfony/expression-language": "~2.6|~3.0.0",
+                "symfony/stopwatch": "~2.3|~3.0.0"
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@@ -2274,7 +2274,7 @@
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             "extra": {
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-                    "dev-master": "3.2-dev"
+                    "dev-master": "2.8-dev"
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@@ -2301,29 +2301,29 @@
             ],
             "description": "Symfony EventDispatcher Component",
             "homepage": "https://symfony.com",
-            "time": "2017-01-02T20:32:22+00:00"
+            "time": "2017-11-05T15:25:56+00:00"
         },
         {
             "name": "symfony/filesystem",
-            "version": "v3.2.2",
+            "version": "v2.8.31",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/filesystem.git",
-                "reference": "a0c6ef2dc78d33b58d91d3a49f49797a184d06f4"
+                "reference": "10507c5f24577b0ad971b0d22097c823b2b45dd3"
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-                "reference": "a0c6ef2dc78d33b58d91d3a49f49797a184d06f4",
+                "url": "https://api.github.com/repos/symfony/filesystem/zipball/10507c5f24577b0ad971b0d22097c823b2b45dd3",
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+                "php": ">=5.3.9"
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-                    "dev-master": "3.2-dev"
+                    "dev-master": "2.8-dev"
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@@ -2350,29 +2350,29 @@
             ],
             "description": "Symfony Filesystem Component",
             "homepage": "https://symfony.com",
-            "time": "2017-01-08T20:47:33+00:00"
+            "time": "2017-11-07T14:08:47+00:00"
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         {
             "name": "symfony/options-resolver",
-            "version": "v3.4.0",
+            "version": "v2.8.31",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/options-resolver.git",
-                "reference": "08748edfe6982f4d878cc42b8325b19a276fb1cf"
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-                "php": "^5.5.9|>=7.0.8"
+                "php": ">=5.3.9"
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+                    "dev-master": "2.8-dev"
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@@ -2404,7 +2404,7 @@
                 "configuration",
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             ],
-            "time": "2017-11-05T16:10:10+00:00"
+            "time": "2017-11-05T15:25:56+00:00"
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@@ -2636,25 +2636,25 @@
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-            "version": "v3.2.2",
+            "version": "v2.8.31",
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                 "type": "git",
                 "url": "https://github.com/symfony/process.git",
-                "reference": "350e810019fc52dd06ae844b6a6d382f8a0e8893"
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+                "php": ">=5.3.9"
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+                    "dev-master": "2.8-dev"
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@@ -2681,29 +2681,29 @@
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             "description": "Symfony Process Component",
             "homepage": "https://symfony.com",
-            "time": "2017-01-02T20:32:22+00:00"
+            "time": "2017-11-05T15:25:56+00:00"
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             "name": "symfony/stopwatch",
-            "version": "v3.2.2",
+            "version": "v2.8.31",
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                 "url": "https://github.com/symfony/stopwatch.git",
-                "reference": "9aa0b51889c01bca474853ef76e9394b02264464"
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-                "reference": "9aa0b51889c01bca474853ef76e9394b02264464",
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+                    "dev-master": "2.8-dev"
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@@ -2730,29 +2730,29 @@
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             "description": "Symfony Stopwatch Component",
             "homepage": "https://symfony.com",
-            "time": "2017-01-02T20:32:22+00:00"
+            "time": "2017-11-10T18:59:36+00:00"
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-            "version": "v3.1.7",
+            "version": "v2.8.31",
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                 "url": "https://github.com/symfony/yaml.git",
-                "reference": "9da375317228e54f4ea1b013b30fa47417e84943"
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-                "reference": "9da375317228e54f4ea1b013b30fa47417e84943",
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+                "php": ">=5.3.9"
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+                    "dev-master": "2.8-dev"
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@@ -2779,7 +2779,7 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2016-11-18T21:05:29+00:00"
+            "time": "2017-11-05T15:25:56+00:00"
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         {
             "name": "webmozart/assert",
@@ -2844,5 +2844,8 @@
         "ext-session": "*",
         "ext-xml": "*"
     },
-    "platform-dev": []
+    "platform-dev": [],
+    "platform-overrides": {
+        "php": "5.5"
+    }
 }