diff --git a/.travis.yml b/.travis.yml
index 9c0cb346..278a57fa 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,15 @@ language: php
 php:
     - 7.0
     - 7.1
+    - 7.2
+    - 7.3
+    - 7.4
+    - nightly
+
+jobs:
+  allow_failures:
+  - php: 7.4
+  - php: nightly
 
 before_install:
     - composer self-update
diff --git a/README.md b/README.md
index e685dd4f..f07db941 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ Each API call is provided via a similarly named function within various classes
 - [ ] Organization Administration
 - [x] [Railgun](https://www.cloudflare.com/railgun/) administration
 - [ ] [Keyless SSL](https://blog.cloudflare.com/keyless-ssl-the-nitty-gritty-technical-details/)
-- [ ] [Origin CA](https://blog.cloudflare.com/universal-ssl-encryption-all-the-way-to-the-origin-for-free/)
+- [x] [Origin CA](https://blog.cloudflare.com/universal-ssl-encryption-all-the-way-to-the-origin-for-free/)
 - [x] Crypto
 - [x] Load Balancers
 - [x] Firewall Settings
diff --git a/composer.json b/composer.json
index 642dab3f..5ffd529e 100644
--- a/composer.json
+++ b/composer.json
@@ -9,7 +9,7 @@
     "ext-json": "*"
   },
   "require-dev": {
-    "phpunit/phpunit": "5.7.5",
+    "phpunit/phpunit": "^5.7",
     "phpmd/phpmd" : "@stable",
     "friendsofphp/php-cs-fixer": "^2.6"
   },
diff --git a/composer.lock b/composer.lock
index 0b8441f8..633000df 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,48 +4,50 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "9a243e606c74dcbd67ae934182df9d2c",
+    "content-hash": "dfd011c55474ffaab84b7a0a6d164049",
     "packages": [
         {
             "name": "guzzlehttp/guzzle",
-            "version": "6.3.3",
+            "version": "6.5.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/guzzle.git",
-                "reference": "407b0cb880ace85c9b63c5f9551db498cb2d50ba"
+                "reference": "43ece0e75098b7ecd8d13918293029e555a50f82"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/407b0cb880ace85c9b63c5f9551db498cb2d50ba",
-                "reference": "407b0cb880ace85c9b63c5f9551db498cb2d50ba",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/43ece0e75098b7ecd8d13918293029e555a50f82",
+                "reference": "43ece0e75098b7ecd8d13918293029e555a50f82",
                 "shasum": ""
             },
             "require": {
+                "ext-json": "*",
                 "guzzlehttp/promises": "^1.0",
-                "guzzlehttp/psr7": "^1.4",
+                "guzzlehttp/psr7": "^1.6.1",
                 "php": ">=5.5"
             },
             "require-dev": {
                 "ext-curl": "*",
                 "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.4 || ^7.0",
-                "psr/log": "^1.0"
+                "psr/log": "^1.1"
             },
             "suggest": {
+                "ext-intl": "Required for Internationalized Domain Name (IDN) support",
                 "psr/log": "Required for using the Log middleware"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "6.3-dev"
+                    "dev-master": "6.5-dev"
                 }
             },
             "autoload": {
-                "files": [
-                    "src/functions_include.php"
-                ],
                 "psr-4": {
                     "GuzzleHttp\\": "src/"
-                }
+                },
+                "files": [
+                    "src/functions_include.php"
+                ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -69,7 +71,7 @@
                 "rest",
                 "web service"
             ],
-            "time": "2018-04-22T15:46:56+00:00"
+            "time": "2019-12-23T11:57:10+00:00"
         },
         {
             "name": "guzzlehttp/promises",
@@ -124,32 +126,37 @@
         },
         {
             "name": "guzzlehttp/psr7",
-            "version": "1.4.2",
+            "version": "1.6.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/psr7.git",
-                "reference": "f5b8a8512e2b58b0071a7280e39f14f72e05d87c"
+                "reference": "239400de7a173fe9901b9ac7c06497751f00727a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/psr7/zipball/f5b8a8512e2b58b0071a7280e39f14f72e05d87c",
-                "reference": "f5b8a8512e2b58b0071a7280e39f14f72e05d87c",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/239400de7a173fe9901b9ac7c06497751f00727a",
+                "reference": "239400de7a173fe9901b9ac7c06497751f00727a",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.4.0",
-                "psr/http-message": "~1.0"
+                "psr/http-message": "~1.0",
+                "ralouphie/getallheaders": "^2.0.5 || ^3.0.0"
             },
             "provide": {
                 "psr/http-message-implementation": "1.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "~4.0"
+                "ext-zlib": "*",
+                "phpunit/phpunit": "~4.8.36 || ^5.7.27 || ^6.5.8"
+            },
+            "suggest": {
+                "zendframework/zend-httphandlerrunner": "Emit PSR-7 responses"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.4-dev"
+                    "dev-master": "1.6-dev"
                 }
             },
             "autoload": {
@@ -179,13 +186,14 @@
             "keywords": [
                 "http",
                 "message",
+                "psr-7",
                 "request",
                 "response",
                 "stream",
                 "uri",
                 "url"
             ],
-            "time": "2017-03-20T17:10:46+00:00"
+            "time": "2019-07-01T23:21:34+00:00"
         },
         {
             "name": "psr/http-message",
@@ -236,29 +244,68 @@
                 "response"
             ],
             "time": "2016-08-06T14:39:51+00:00"
+        },
+        {
+            "name": "ralouphie/getallheaders",
+            "version": "3.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/ralouphie/getallheaders.git",
+                "reference": "120b605dfeb996808c31b6477290a714d356e822"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/ralouphie/getallheaders/zipball/120b605dfeb996808c31b6477290a714d356e822",
+                "reference": "120b605dfeb996808c31b6477290a714d356e822",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.6"
+            },
+            "require-dev": {
+                "php-coveralls/php-coveralls": "^2.1",
+                "phpunit/phpunit": "^5 || ^6.5"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "src/getallheaders.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Ralph Khattar",
+                    "email": "ralph.khattar@gmail.com"
+                }
+            ],
+            "description": "A polyfill for getallheaders.",
+            "time": "2019-03-08T08:55:37+00:00"
         }
     ],
     "packages-dev": [
         {
             "name": "composer/semver",
-            "version": "1.4.2",
+            "version": "1.5.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/composer/semver.git",
-                "reference": "c7cb9a2095a074d131b65a8a0cd294479d785573"
+                "reference": "c6bea70230ef4dd483e6bbcab6005f682ed3a8de"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/composer/semver/zipball/c7cb9a2095a074d131b65a8a0cd294479d785573",
-                "reference": "c7cb9a2095a074d131b65a8a0cd294479d785573",
+                "url": "https://api.github.com/repos/composer/semver/zipball/c6bea70230ef4dd483e6bbcab6005f682ed3a8de",
+                "reference": "c6bea70230ef4dd483e6bbcab6005f682ed3a8de",
                 "shasum": ""
             },
             "require": {
                 "php": "^5.3.2 || ^7.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.5 || ^5.0.5",
-                "phpunit/phpunit-mock-objects": "2.3.0 || ^3.0"
+                "phpunit/phpunit": "^4.5 || ^5.0.5"
             },
             "type": "library",
             "extra": {
@@ -299,28 +346,28 @@
                 "validation",
                 "versioning"
             ],
-            "time": "2016-08-30T16:08:34+00:00"
+            "time": "2020-01-13T12:06:48+00:00"
         },
         {
             "name": "composer/xdebug-handler",
-            "version": "1.3.0",
+            "version": "1.4.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/composer/xdebug-handler.git",
-                "reference": "b8e9745fb9b06ea6664d8872c4505fb16df4611c"
+                "reference": "1ab9842d69e64fb3a01be6b656501032d1b78cb7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/composer/xdebug-handler/zipball/b8e9745fb9b06ea6664d8872c4505fb16df4611c",
-                "reference": "b8e9745fb9b06ea6664d8872c4505fb16df4611c",
+                "url": "https://api.github.com/repos/composer/xdebug-handler/zipball/1ab9842d69e64fb3a01be6b656501032d1b78cb7",
+                "reference": "1ab9842d69e64fb3a01be6b656501032d1b78cb7",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.3.2 || ^7.0",
+                "php": "^5.3.2 || ^7.0 || ^8.0",
                 "psr/log": "^1.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.5"
+                "phpunit/phpunit": "^4.8.35 || ^5.7 || 6.5 - 8"
             },
             "type": "library",
             "autoload": {
@@ -338,12 +385,12 @@
                     "email": "john-stevenson@blueyonder.co.uk"
                 }
             ],
-            "description": "Restarts a process without xdebug.",
+            "description": "Restarts a process without Xdebug.",
             "keywords": [
                 "Xdebug",
                 "performance"
             ],
-            "time": "2018-08-31T19:07:57+00:00"
+            "time": "2020-03-01T12:26:26+00:00"
         },
         {
             "name": "doctrine/annotations",
@@ -469,21 +516,24 @@
         },
         {
             "name": "doctrine/lexer",
-            "version": "v1.0.1",
+            "version": "1.0.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/doctrine/lexer.git",
-                "reference": "83893c552fd2045dd78aef794c31e694c37c0b8c"
+                "reference": "1febd6c3ef84253d7c815bed85fc622ad207a9f8"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/doctrine/lexer/zipball/83893c552fd2045dd78aef794c31e694c37c0b8c",
-                "reference": "83893c552fd2045dd78aef794c31e694c37c0b8c",
+                "url": "https://api.github.com/repos/doctrine/lexer/zipball/1febd6c3ef84253d7c815bed85fc622ad207a9f8",
+                "reference": "1febd6c3ef84253d7c815bed85fc622ad207a9f8",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.3.2"
             },
+            "require-dev": {
+                "phpunit/phpunit": "^4.5"
+            },
             "type": "library",
             "extra": {
                 "branch-alias": {
@@ -491,8 +541,8 @@
                 }
             },
             "autoload": {
-                "psr-0": {
-                    "Doctrine\\Common\\Lexer\\": "lib/"
+                "psr-4": {
+                    "Doctrine\\Common\\Lexer\\": "lib/Doctrine/Common/Lexer"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -513,26 +563,29 @@
                     "email": "schmittjoh@gmail.com"
                 }
             ],
-            "description": "Base library for a lexer that can be used in Top-Down, Recursive Descent Parsers.",
-            "homepage": "http://www.doctrine-project.org",
+            "description": "PHP Doctrine Lexer parser library that can be used in Top-Down, Recursive Descent Parsers.",
+            "homepage": "https://www.doctrine-project.org/projects/lexer.html",
             "keywords": [
+                "annotations",
+                "docblock",
                 "lexer",
-                "parser"
+                "parser",
+                "php"
             ],
-            "time": "2014-09-09T13:34:57+00:00"
+            "time": "2019-06-08T11:03:04+00:00"
         },
         {
             "name": "friendsofphp/php-cs-fixer",
-            "version": "v2.13.1",
+            "version": "v2.16.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/FriendsOfPHP/PHP-CS-Fixer.git",
-                "reference": "54814c62d5beef3ba55297b9b3186ed8b8a1b161"
+                "reference": "c8afb599858876e95e8ebfcd97812d383fa23f02"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/FriendsOfPHP/PHP-CS-Fixer/zipball/54814c62d5beef3ba55297b9b3186ed8b8a1b161",
-                "reference": "54814c62d5beef3ba55297b9b3186ed8b8a1b161",
+                "url": "https://api.github.com/repos/FriendsOfPHP/PHP-CS-Fixer/zipball/c8afb599858876e95e8ebfcd97812d383fa23f02",
+                "reference": "c8afb599858876e95e8ebfcd97812d383fa23f02",
                 "shasum": ""
             },
             "require": {
@@ -541,33 +594,31 @@
                 "doctrine/annotations": "^1.2",
                 "ext-json": "*",
                 "ext-tokenizer": "*",
-                "php": "^5.6 || >=7.0 <7.3",
+                "php": "^5.6 || ^7.0",
                 "php-cs-fixer/diff": "^1.3",
-                "symfony/console": "^3.4.17 || ^4.1.6",
-                "symfony/event-dispatcher": "^3.0 || ^4.0",
-                "symfony/filesystem": "^3.0 || ^4.0",
-                "symfony/finder": "^3.0 || ^4.0",
-                "symfony/options-resolver": "^3.0 || ^4.0",
+                "symfony/console": "^3.4.17 || ^4.1.6 || ^5.0",
+                "symfony/event-dispatcher": "^3.0 || ^4.0 || ^5.0",
+                "symfony/filesystem": "^3.0 || ^4.0 || ^5.0",
+                "symfony/finder": "^3.0 || ^4.0 || ^5.0",
+                "symfony/options-resolver": "^3.0 || ^4.0 || ^5.0",
                 "symfony/polyfill-php70": "^1.0",
                 "symfony/polyfill-php72": "^1.4",
-                "symfony/process": "^3.0 || ^4.0",
-                "symfony/stopwatch": "^3.0 || ^4.0"
-            },
-            "conflict": {
-                "hhvm": "*"
+                "symfony/process": "^3.0 || ^4.0 || ^5.0",
+                "symfony/stopwatch": "^3.0 || ^4.0 || ^5.0"
             },
             "require-dev": {
                 "johnkary/phpunit-speedtrap": "^1.1 || ^2.0 || ^3.0",
                 "justinrainbow/json-schema": "^5.0",
-                "keradus/cli-executor": "^1.1",
+                "keradus/cli-executor": "^1.2",
                 "mikey179/vfsstream": "^1.6",
                 "php-coveralls/php-coveralls": "^2.1",
                 "php-cs-fixer/accessible-object": "^1.0",
-                "php-cs-fixer/phpunit-constraint-isidenticalstring": "^1.0.1",
-                "php-cs-fixer/phpunit-constraint-xmlmatchesxsd": "^1.0.1",
-                "phpunit/phpunit": "^5.7.27 || ^6.5.8 || ^7.1",
-                "phpunitgoodpractices/traits": "^1.5.1",
-                "symfony/phpunit-bridge": "^4.0"
+                "php-cs-fixer/phpunit-constraint-isidenticalstring": "^1.1",
+                "php-cs-fixer/phpunit-constraint-xmlmatchesxsd": "^1.1",
+                "phpunit/phpunit": "^5.7.27 || ^6.5.14 || ^7.1",
+                "phpunitgoodpractices/traits": "^1.8",
+                "symfony/phpunit-bridge": "^4.3 || ^5.0",
+                "symfony/yaml": "^3.0 || ^4.0 || ^5.0"
             },
             "suggest": {
                 "ext-mbstring": "For handling non-UTF8 characters in cache signature.",
@@ -600,17 +651,17 @@
                 "MIT"
             ],
             "authors": [
-                {
-                    "name": "Dariusz Rumiński",
-                    "email": "dariusz.ruminski@gmail.com"
-                },
                 {
                     "name": "Fabien Potencier",
                     "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Dariusz Rumiński",
+                    "email": "dariusz.ruminski@gmail.com"
                 }
             ],
             "description": "A tool to automatically fix PHP code style",
-            "time": "2018-10-21T00:32:10+00:00"
+            "time": "2019-11-25T22:10:32+00:00"
         },
         {
             "name": "myclabs/deep-copy",
@@ -704,32 +755,39 @@
         },
         {
             "name": "pdepend/pdepend",
-            "version": "2.5.2",
+            "version": "2.7.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/pdepend/pdepend.git",
-                "reference": "9daf26d0368d4a12bed1cacae1a9f3a6f0adf239"
+                "reference": "daba1cf0a6edaf172fa02a17807ae29f4c1c7471"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/pdepend/pdepend/zipball/9daf26d0368d4a12bed1cacae1a9f3a6f0adf239",
-                "reference": "9daf26d0368d4a12bed1cacae1a9f3a6f0adf239",
+                "url": "https://api.github.com/repos/pdepend/pdepend/zipball/daba1cf0a6edaf172fa02a17807ae29f4c1c7471",
+                "reference": "daba1cf0a6edaf172fa02a17807ae29f4c1c7471",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.3.7",
-                "symfony/config": "^2.3.0|^3|^4",
-                "symfony/dependency-injection": "^2.3.0|^3|^4",
-                "symfony/filesystem": "^2.3.0|^3|^4"
+                "symfony/config": "^2.3.0|^3|^4|^5",
+                "symfony/dependency-injection": "^2.3.0|^3|^4|^5",
+                "symfony/filesystem": "^2.3.0|^3|^4|^5"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.8|^5.7",
+                "easy-doc/easy-doc": "0.0.0 || ^1.2.3",
+                "gregwar/rst": "^1.0",
+                "phpunit/phpunit": "^4.8.35|^5.7",
                 "squizlabs/php_codesniffer": "^2.0.0"
             },
             "bin": [
                 "src/bin/pdepend"
             ],
             "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.x-dev"
+                }
+            },
             "autoload": {
                 "psr-4": {
                     "PDepend\\": "src/main/php/PDepend"
@@ -740,7 +798,7 @@
                 "BSD-3-Clause"
             ],
             "description": "Official version of pdepend to be handled with Composer",
-            "time": "2017-12-13T13:21:38+00:00"
+            "time": "2020-02-08T12:06:13+00:00"
         },
         {
             "name": "php-cs-fixer/diff",
@@ -849,27 +907,28 @@
         },
         {
             "name": "phpdocumentor/reflection-docblock",
-            "version": "4.3.0",
+            "version": "4.3.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpDocumentor/ReflectionDocBlock.git",
-                "reference": "94fd0001232e47129dd3504189fa1c7225010d08"
+                "reference": "da3fd972d6bafd628114f7e7e036f45944b62e9c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/94fd0001232e47129dd3504189fa1c7225010d08",
-                "reference": "94fd0001232e47129dd3504189fa1c7225010d08",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/da3fd972d6bafd628114f7e7e036f45944b62e9c",
+                "reference": "da3fd972d6bafd628114f7e7e036f45944b62e9c",
                 "shasum": ""
             },
             "require": {
                 "php": "^7.0",
-                "phpdocumentor/reflection-common": "^1.0.0",
-                "phpdocumentor/type-resolver": "^0.4.0",
+                "phpdocumentor/reflection-common": "^1.0.0 || ^2.0.0",
+                "phpdocumentor/type-resolver": "~0.4 || ^1.0.0",
                 "webmozart/assert": "^1.0"
             },
             "require-dev": {
-                "doctrine/instantiator": "~1.0.5",
+                "doctrine/instantiator": "^1.0.5",
                 "mockery/mockery": "^1.0",
+                "phpdocumentor/type-resolver": "0.4.*",
                 "phpunit/phpunit": "^6.4"
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-                "url": "https://api.github.com/repos/symfony/polyfill-ctype/zipball/e3d826245268269cd66f8326bd8bc066687b4a19",
-                "reference": "e3d826245268269cd66f8326bd8bc066687b4a19",
+                "url": "https://api.github.com/repos/symfony/polyfill-ctype/zipball/fbdeaec0df06cf3d51c93de80c7eb76e271f5a38",
+                "reference": "fbdeaec0df06cf3d51c93de80c7eb76e271f5a38",
                 "shasum": ""
             },
             "require": {
@@ -2572,7 +2633,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.9-dev"
+                    "dev-master": "1.14-dev"
                 }
             },
             "autoload": {
@@ -2588,13 +2649,13 @@
                 "MIT"
             ],
             "authors": [
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
-                },
                 {
                     "name": "Gert de Pagter",
                     "email": "BackEndTea@gmail.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
                 }
             ],
             "description": "Symfony polyfill for ctype functions",
@@ -2605,20 +2666,20 @@
                 "polyfill",
                 "portable"
             ],
-            "time": "2018-08-06T14:22:27+00:00"
+            "time": "2020-01-13T11:15:53+00:00"
         },
         {
             "name": "symfony/polyfill-mbstring",
-            "version": "v1.9.0",
+            "version": "v1.14.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-mbstring.git",
-                "reference": "d0cd638f4634c16d8df4508e847f14e9e43168b8"
+                "reference": "34094cfa9abe1f0f14f48f490772db7a775559f2"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/d0cd638f4634c16d8df4508e847f14e9e43168b8",
-                "reference": "d0cd638f4634c16d8df4508e847f14e9e43168b8",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/34094cfa9abe1f0f14f48f490772db7a775559f2",
+                "reference": "34094cfa9abe1f0f14f48f490772db7a775559f2",
                 "shasum": ""
             },
             "require": {
@@ -2630,7 +2691,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.9-dev"
+                    "dev-master": "1.14-dev"
                 }
             },
             "autoload": {
@@ -2664,20 +2725,20 @@
                 "portable",
                 "shim"
             ],
-            "time": "2018-08-06T14:22:27+00:00"
+            "time": "2020-01-13T11:15:53+00:00"
         },
         {
             "name": "symfony/polyfill-php70",
-            "version": "v1.9.0",
+            "version": "v1.14.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-php70.git",
-                "reference": "1e24b0c4a56d55aaf368763a06c6d1c7d3194934"
+                "reference": "419c4940024c30ccc033650373a1fe13890d3255"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-php70/zipball/1e24b0c4a56d55aaf368763a06c6d1c7d3194934",
-                "reference": "1e24b0c4a56d55aaf368763a06c6d1c7d3194934",
+                "url": "https://api.github.com/repos/symfony/polyfill-php70/zipball/419c4940024c30ccc033650373a1fe13890d3255",
+                "reference": "419c4940024c30ccc033650373a1fe13890d3255",
                 "shasum": ""
             },
             "require": {
@@ -2687,7 +2748,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.9-dev"
+                    "dev-master": "1.14-dev"
                 }
             },
             "autoload": {
@@ -2723,20 +2784,20 @@
                 "portable",
                 "shim"
             ],
-            "time": "2018-08-06T14:22:27+00:00"
+            "time": "2020-01-13T11:15:53+00:00"
         },
         {
             "name": "symfony/polyfill-php72",
-            "version": "v1.9.0",
+            "version": "v1.14.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-php72.git",
-                "reference": "95c50420b0baed23852452a7f0c7b527303ed5ae"
+                "reference": "46ecacf4751dd0dc81e4f6bf01dbf9da1dc1dadf"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-php72/zipball/95c50420b0baed23852452a7f0c7b527303ed5ae",
-                "reference": "95c50420b0baed23852452a7f0c7b527303ed5ae",
+                "url": "https://api.github.com/repos/symfony/polyfill-php72/zipball/46ecacf4751dd0dc81e4f6bf01dbf9da1dc1dadf",
+                "reference": "46ecacf4751dd0dc81e4f6bf01dbf9da1dc1dadf",
                 "shasum": ""
             },
             "require": {
@@ -2745,7 +2806,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.9-dev"
+                    "dev-master": "1.14-dev"
                 }
             },
             "autoload": {
@@ -2778,20 +2839,20 @@
                 "portable",
                 "shim"
             ],
-            "time": "2018-08-06T14:22:27+00:00"
+            "time": "2020-01-13T11:15:53+00:00"
         },
         {
             "name": "symfony/process",
-            "version": "v3.4.17",
+            "version": "v3.4.38",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/process.git",
-                "reference": "1dc2977afa7d70f90f3fefbcd84152813558910e"
+                "reference": "b03b02dcea26ba4c65c16a73bab4f00c186b13da"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/process/zipball/1dc2977afa7d70f90f3fefbcd84152813558910e",
-                "reference": "1dc2977afa7d70f90f3fefbcd84152813558910e",
+                "url": "https://api.github.com/repos/symfony/process/zipball/b03b02dcea26ba4c65c16a73bab4f00c186b13da",
+                "reference": "b03b02dcea26ba4c65c16a73bab4f00c186b13da",
                 "shasum": ""
             },
             "require": {
@@ -2827,20 +2888,20 @@
             ],
             "description": "Symfony Process Component",
             "homepage": "https://symfony.com",
-            "time": "2018-10-02T12:28:39+00:00"
+            "time": "2020-02-04T08:04:52+00:00"
         },
         {
             "name": "symfony/stopwatch",
-            "version": "v3.4.17",
+            "version": "v3.4.38",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/stopwatch.git",
-                "reference": "05e52a39de52ba690aebaed462b2bc8a9649f0a4"
+                "reference": "e2d954156d4817c9a5c79f519a71516693a4a9c8"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/stopwatch/zipball/05e52a39de52ba690aebaed462b2bc8a9649f0a4",
-                "reference": "05e52a39de52ba690aebaed462b2bc8a9649f0a4",
+                "url": "https://api.github.com/repos/symfony/stopwatch/zipball/e2d954156d4817c9a5c79f519a71516693a4a9c8",
+                "reference": "e2d954156d4817c9a5c79f519a71516693a4a9c8",
                 "shasum": ""
             },
             "require": {
@@ -2876,20 +2937,20 @@
             ],
             "description": "Symfony Stopwatch Component",
             "homepage": "https://symfony.com",
-            "time": "2018-10-02T12:28:39+00:00"
+            "time": "2020-01-01T11:03:25+00:00"
         },
         {
             "name": "symfony/yaml",
-            "version": "v3.4.17",
+            "version": "v3.4.38",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/yaml.git",
-                "reference": "640b6c27fed4066d64b64d5903a86043f4a4de7f"
+                "reference": "bc63e15160866e8730a1f738541b194c401f72bf"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/yaml/zipball/640b6c27fed4066d64b64d5903a86043f4a4de7f",
-                "reference": "640b6c27fed4066d64b64d5903a86043f4a4de7f",
+                "url": "https://api.github.com/repos/symfony/yaml/zipball/bc63e15160866e8730a1f738541b194c401f72bf",
+                "reference": "bc63e15160866e8730a1f738541b194c401f72bf",
                 "shasum": ""
             },
             "require": {
@@ -2935,35 +2996,33 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2018-10-02T16:33:53+00:00"
+            "time": "2020-01-16T19:04:26+00:00"
         },
         {
             "name": "webmozart/assert",
-            "version": "1.3.0",
+            "version": "1.7.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/webmozart/assert.git",
-                "reference": "0df1908962e7a3071564e857d86874dad1ef204a"
+                "reference": "aed98a490f9a8f78468232db345ab9cf606cf598"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/webmozart/assert/zipball/0df1908962e7a3071564e857d86874dad1ef204a",
-                "reference": "0df1908962e7a3071564e857d86874dad1ef204a",
+                "url": "https://api.github.com/repos/webmozart/assert/zipball/aed98a490f9a8f78468232db345ab9cf606cf598",
+                "reference": "aed98a490f9a8f78468232db345ab9cf606cf598",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.3.3 || ^7.0"
+                "php": "^5.3.3 || ^7.0",
+                "symfony/polyfill-ctype": "^1.8"
+            },
+            "conflict": {
+                "vimeo/psalm": "<3.6.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.6",
-                "sebastian/version": "^1.0.1"
+                "phpunit/phpunit": "^4.8.36 || ^7.5.13"
             },
             "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.3-dev"
-                }
-            },
             "autoload": {
                 "psr-4": {
                     "Webmozart\\Assert\\": "src/"
@@ -2985,18 +3044,17 @@
                 "check",
                 "validate"
             ],
-            "time": "2018-01-29T19:49:41+00:00"
+            "time": "2020-02-14T12:15:55+00:00"
         }
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": {
-        "phpmd/phpmd": 0
-    },
+    "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": ">=7.0.0"
+        "php": ">=7.0.0",
+        "ext-json": "*"
     },
     "platform-dev": []
 }
diff --git a/src/Configurations/Certificate.php b/src/Configurations/Certificate.php
new file mode 100644
index 00000000..8b7d082e
--- /dev/null
+++ b/src/Configurations/Certificate.php
@@ -0,0 +1,58 @@
+<?php
+
+namespace Cloudflare\API\Configurations;
+
+class Certificate implements Configurations
+{
+    const ORIGIN_RSA = 'origin-rsa';
+    const ORIGIN_ECC = 'origin-ecc';
+    const KEYLESS_CERTIFICATE = 'keyless-certificate';
+
+    private $config = [];
+
+    public function getArray(): array
+    {
+        return $this->config;
+    }
+
+    /**
+     * Array of hostnames or wildcard names (e.g., *.example.com) bound to the certificate
+     * Example: $hostnames = ["example.com", "foo.example.com"]
+     * @param array $hostnames
+     */
+    public function setHostnames(array $hostnames)
+    {
+        $this->config['hostnames'] = $hostnames;
+    }
+
+    /**
+     * The number of days for which the certificate should be valid
+     * Default value: 5475
+     * Valid values: 7, 30, 90, 365, 730, 1095, 5475
+     * @param int $validity
+     */
+    public function setRequestedValidity(int $validity)
+    {
+        $this->config['requested_validity'] = $validity;
+    }
+
+    /**
+     * Signature type desired on certificate ("origin-rsa" (rsa), "origin-ecc" (ecdsa), or "keyless-certificate" (for Keyless SSL servers)
+     * Valid values: origin-rsa, origin-ecc, keyless-certificate
+     * @param string $type
+     */
+    public function setRequestType(string $type)
+    {
+        $this->config['request_type'] = $type;
+    }
+
+    /**
+     * The Certificate Signing Request (CSR). Must be newline-encoded.
+     *
+     * @param string $csr
+     */
+    public function setCsr(string $csr)
+    {
+        $this->config['csr'] = $csr;
+    }
+}
diff --git a/src/Endpoints/Certificates.php b/src/Endpoints/Certificates.php
new file mode 100644
index 00000000..a1888b5e
--- /dev/null
+++ b/src/Endpoints/Certificates.php
@@ -0,0 +1,86 @@
+<?php
+
+namespace Cloudflare\API\Endpoints;
+
+use Cloudflare\API\Adapter\Adapter;
+use Cloudflare\API\Configurations\Certificate as CertificateConfig;
+use Cloudflare\API\Traits\BodyAccessorTrait;
+
+class Certificates implements API
+{
+    use BodyAccessorTrait;
+
+    private $adapter;
+
+    public function __construct(Adapter $adapter)
+    {
+        $this->adapter = $adapter;
+    }
+
+    /**
+     * List all existing Origin CA certificates for a given zone
+     *
+     * @param string $zoneID
+     * @return array
+     */
+    public function listCertificates(string $zoneID): \stdClass
+    {
+        $certificates = $this->adapter->get('certificates', ['zone_id' => $zoneID]);
+        $this->body = json_decode($certificates->getBody());
+
+        return (object)['result' => $this->body->result];
+    }
+
+    /**
+     * Get an existing Origin CA certificate by its serial number
+     *
+     * @param string $certificateID
+     * @param string $zoneID
+     * @return mixed
+     */
+    public function getCertificate(string $certificateID, string $zoneID)
+    {
+        $certificates = $this->adapter->get('certificates/'.$certificateID, ['zone_id' => $zoneID]);
+        $this->body = json_decode($certificates->getBody());
+
+        return (object)['result' => $this->body->result];
+    }
+
+    /**
+     * Revoke an existing Origin CA certificate by its serial number
+     *
+     * @param string $certificateID
+     * @param string $zoneID
+     * @return bool
+     */
+    public function revokeCertificate(string $certificateID, string $zoneID): bool
+    {
+        $certificates = $this->adapter->delete('certificates/'.$certificateID, ['zone_id' => $zoneID]);
+        $this->body = json_decode($certificates->getBody());
+
+        if (isset($this->body->result->id)) {
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Create an Origin CA certificate
+     *
+     * @param CertificateConfig $config
+     * @return bool
+     */
+    public function createCertificate(CertificateConfig $config): bool
+    {
+        $certificate = $this->adapter->post('certificates', $config->getArray());
+
+        $this->body = json_decode($certificate->getBody());
+
+        if (isset($this->body->result->id)) {
+            return true;
+        }
+
+        return false;
+    }
+}
diff --git a/tests/Configurations/CertificateTest.php b/tests/Configurations/CertificateTest.php
new file mode 100644
index 00000000..059f38e6
--- /dev/null
+++ b/tests/Configurations/CertificateTest.php
@@ -0,0 +1,22 @@
+<?php
+
+use PHPUnit\Framework\TestCase;
+use Cloudflare\API\Configurations\Certificate;
+
+class CertificateTest extends TestCase
+{
+    public function testGetArray()
+    {
+        $certificate = new Certificate();
+        $certificate->setHostnames(['foo.com', '*.bar.com']);
+        $certificate->setRequestType(Certificate::ORIGIN_ECC);
+        $certificate->setRequestedValidity(365);
+        $certificate->setCsr('some-csr-encoded-text');
+
+        $array = $certificate->getArray();
+        $this->assertEquals(['foo.com', '*.bar.com'], $array['hostnames']);
+        $this->assertEquals('origin-ecc', $array['request_type']);
+        $this->assertEquals(365, $array['requested_validity']);
+        $this->assertEquals('some-csr-encoded-text', $array['csr']);
+    }
+}
diff --git a/tests/Endpoints/CertificatesTest.php b/tests/Endpoints/CertificatesTest.php
new file mode 100644
index 00000000..aa6c80d0
--- /dev/null
+++ b/tests/Endpoints/CertificatesTest.php
@@ -0,0 +1,120 @@
+<?php
+
+use Cloudflare\API\Endpoints\Certificates;
+
+class CertificatesTest extends TestCase
+{
+    public function testListCertificates()
+    {
+        $response = $this->getPsr7JsonResponseForFixture('Endpoints/listCertificates.json');
+
+        $mock = $this->getMockBuilder(\Cloudflare\API\Adapter\Adapter::class)->getMock();
+        $mock->method('get')->willReturn($response);
+
+        $mock->expects($this->once())
+            ->method('get')
+            ->with(
+                $this->equalTo('certificates'),
+                $this->equalTo(
+                    [
+                        'zone_id' => '023e105f4ecef8ad9ca31a8372d0c353',
+                    ]
+                )
+            );
+
+        $certEndpoint = new Certificates($mock);
+        $result = $certEndpoint->listCertificates('023e105f4ecef8ad9ca31a8372d0c353');
+
+        $this->assertObjectHasAttribute('result', $result);
+
+        $cert = $result->result[0];
+        $this->assertEquals('328578533902268680212849205732770752308931942346', $cert->id);
+        $this->assertEquals('origin-rsa', $cert->request_type);
+        $this->assertEquals(5475, $cert->requested_validity);
+        $this->assertEquals(['example.com', '*.example.com'], $cert->hostnames);
+        $this->assertEquals('some-cert-data', $cert->certificate);
+        $this->assertEquals('some-csr-data', $cert->csr);
+    }
+
+    public function testGetCertificate()
+    {
+        $response = $this->getPsr7JsonResponseForFixture('Endpoints/getCertificate.json');
+
+        $mock = $this->getMockBuilder(\Cloudflare\API\Adapter\Adapter::class)->getMock();
+        $mock->method('get')->willReturn($response);
+
+        $mock->expects($this->once())
+            ->method('get')
+            ->with(
+                $this->equalTo('certificates/6666699999996666699999999966666666'),
+                $this->equalTo(['zone_id' => '023e105f4ecef8ad9ca31a8372d0c353']),
+                $this->equalTo([])
+            );
+
+        $certEndpoint = new Certificates($mock);
+        $response = $certEndpoint->getCertificate(
+            '6666699999996666699999999966666666',
+            '023e105f4ecef8ad9ca31a8372d0c353'
+        );
+
+        $this->assertObjectHasAttribute('result', $response);
+        $cert = $response->result;
+        $this->assertEquals('6666699999996666699999999966666666', $cert->id);
+        $this->assertEquals('origin-ecc', $cert->request_type);
+        $this->assertEquals(5475, $cert->requested_validity);
+        $this->assertEquals(['foo.example.com', 'bar.example.com'], $cert->hostnames);
+        $this->assertEquals('some-cert-data-foobar', $cert->certificate);
+        $this->assertEquals('some-csr-data-foobar', $cert->csr);
+    }
+
+    public function testRevokeCertificate()
+    {
+        $response = $this->getPsr7JsonResponseForFixture('Endpoints/getCertificate.json');
+
+        $mock = $this->getMockBuilder(\Cloudflare\API\Adapter\Adapter::class)->getMock();
+        $mock->method('delete')->willReturn($response);
+
+        $mock->expects($this->once())
+            ->method('delete')
+            ->with(
+                $this->equalTo('certificates/11112222233333444455555'),
+                $this->equalTo(['zone_id' => '023e105f4ecef8ad9ca31a8372d0c353']),
+                $this->equalTo([])
+            );
+
+        $certEndpoint = new Certificates($mock);
+        $result = $certEndpoint->revokeCertificate(
+            '11112222233333444455555',
+            '023e105f4ecef8ad9ca31a8372d0c353'
+        );
+
+        $this->assertTrue($result);
+    }
+
+    public function testCreateCertificate()
+    {
+        $certificate = new \Cloudflare\API\Configurations\Certificate();
+        $certificate->setHostnames(['foo.example.com', 'bar.exapmle.com']);
+        $certificate->setRequestType(\Cloudflare\API\Configurations\Certificate::ORIGIN_ECC);
+        $certificate->setRequestedValidity(365);
+        $certificate->setCsr('some-csr-data-barbar');
+
+        $response = $this->getPsr7JsonResponseForFixture('Endpoints/getCertificate.json');
+
+        $mock = $this->getMockBuilder(\Cloudflare\API\Adapter\Adapter::class)->getMock();
+        $mock->method('post')->willReturn($response);
+
+        $mock->expects($this->once())
+            ->method('post')
+            ->with(
+                $this->equalTo('certificates'),
+                $this->equalTo($certificate->getArray()),
+                $this->equalTo([])
+            );
+
+        $certEndpoint = new Certificates($mock);
+        $result = $certEndpoint->createCertificate($certificate);
+
+        $this->assertTrue($result);
+    }
+}
diff --git a/tests/Fixtures/Endpoints/createCertificate.json b/tests/Fixtures/Endpoints/createCertificate.json
new file mode 100644
index 00000000..38ef97e7
--- /dev/null
+++ b/tests/Fixtures/Endpoints/createCertificate.json
@@ -0,0 +1,17 @@
+{
+  "success": true,
+  "errors": [],
+  "messages": [],
+  "result": {
+    "id": "12341234123412341234",
+    "certificate": "some-cert-data-foofoo",
+    "hostnames": [
+      "foo.example.com",
+      "bar.example.com"
+    ],
+    "expires_on": "2014-01-01T05:20:00.12345Z",
+    "request_type": "origin-ecc",
+    "requested_validity":  365,
+    "csr": "some-csr-data-barbar"
+  }
+}
\ No newline at end of file
diff --git a/tests/Fixtures/Endpoints/getCertificate.json b/tests/Fixtures/Endpoints/getCertificate.json
new file mode 100644
index 00000000..1c766686
--- /dev/null
+++ b/tests/Fixtures/Endpoints/getCertificate.json
@@ -0,0 +1,17 @@
+{
+  "success": true,
+  "errors": [],
+  "messages": [],
+  "result": {
+    "id": "6666699999996666699999999966666666",
+    "certificate": "some-cert-data-foobar",
+    "hostnames": [
+      "foo.example.com",
+      "bar.example.com"
+    ],
+    "expires_on": "2014-01-01T05:20:00.12345Z",
+    "request_type": "origin-ecc",
+    "requested_validity": 5475,
+    "csr": "some-csr-data-foobar"
+  }
+}
\ No newline at end of file
diff --git a/tests/Fixtures/Endpoints/listCertificates.json b/tests/Fixtures/Endpoints/listCertificates.json
new file mode 100644
index 00000000..5cd117b6
--- /dev/null
+++ b/tests/Fixtures/Endpoints/listCertificates.json
@@ -0,0 +1,19 @@
+{
+  "success": true,
+  "errors": [],
+  "messages": [],
+  "result": [
+    {
+      "id": "328578533902268680212849205732770752308931942346",
+      "certificate": "some-cert-data",
+      "hostnames": [
+        "example.com",
+        "*.example.com"
+      ],
+      "expires_on": "2014-01-01T05:20:00.12345Z",
+      "request_type": "origin-rsa",
+      "requested_validity": 5475,
+      "csr": "some-csr-data"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/tests/Fixtures/Endpoints/revokeCertificate.json b/tests/Fixtures/Endpoints/revokeCertificate.json
new file mode 100644
index 00000000..a8458364
--- /dev/null
+++ b/tests/Fixtures/Endpoints/revokeCertificate.json
@@ -0,0 +1,8 @@
+{
+  "success": true,
+  "errors": [],
+  "messages": [],
+  "result": {
+    "id": "11112222233333444455555"
+  }
+}
\ No newline at end of file