diff --git a/composer.json b/composer.json
index 24d047e8..ffc9186a 100644
--- a/composer.json
+++ b/composer.json
@@ -10,10 +10,10 @@
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         "cloudflare/cf-ip-rewrite": "^1.0.0",
-        "cloudflare/cloudflare-plugin-backend": "2.4.0",
-        "symfony/yaml": "~2.6"
+        "cloudflare/cloudflare-plugin-backend": "2.4.0"
     },
     "require-dev": {
+        "symfony/yaml": "~2.6",
         "johnkary/phpunit-speedtrap": "^3",
         "php-mock/php-mock-phpunit": "^2",
         "phpunit/phpunit": "^8",
diff --git a/composer.lock b/composer.lock
index 9ce5f053..1f98bea4 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
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         "This file is @generated automatically"
     ],
-    "content-hash": "d8c0cab412ae81b7f5be9a98b273cc59",
+    "content-hash": "64a60920893acae2108143e63a683816",
     "packages": [
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             "name": "cloudflare/cf-ip-rewrite",
@@ -132,132 +132,6 @@
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-                    "homepage": "https://symfony.com/contributors"
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-            "homepage": "https://symfony.com",
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-                "polyfill",
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-            "description": "Symfony Yaml Component",
-            "homepage": "https://symfony.com",
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     ],
     "packages-dev": [
@@ -2224,6 +2098,135 @@
             ],
             "time": "2018-11-07T22:31:41+00:00"
         },
+        {
+            "name": "symfony/polyfill-ctype",
+            "version": "v1.22.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-ctype.git",
+                "reference": "c6c942b1ac76c82448322025e084cadc56048b4e"
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+                "reference": "c6c942b1ac76c82448322025e084cadc56048b4e",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1"
+            },
+            "suggest": {
+                "ext-ctype": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "1.22-dev"
+                },
+                "thanks": {
+                    "name": "symfony/polyfill",
+                    "url": "https://github.com/symfony/polyfill"
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+            "autoload": {
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+                    "Symfony\\Polyfill\\Ctype\\": ""
+                },
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+                ]
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+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Gert de Pagter",
+                    "email": "BackEndTea@gmail.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill for ctype functions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "ctype",
+                "polyfill",
+                "portable"
+            ],
+            "funding": [
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+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
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+                {
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+                    "type": "tidelift"
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+            "time": "2021-01-07T16:49:33+00:00"
+        },
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+            "version": "v2.8.52",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/yaml.git",
+                "reference": "02c1859112aa779d9ab394ae4f3381911d84052b"
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+                "reference": "02c1859112aa779d9ab394ae4f3381911d84052b",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.9",
+                "symfony/polyfill-ctype": "~1.8"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.8-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Yaml\\": ""
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+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
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+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Yaml Component",
+            "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/yaml/tree/v2.8.52"
+            },
+            "time": "2018-11-11T11:18:13+00:00"
+        },
         {
             "name": "theseer/tokenizer",
             "version": "1.2.0",