diff --git a/composer.lock b/composer.lock
index cfb3db1..505c262 100644
--- a/composer.lock
+++ b/composer.lock
@@ -896,16 +896,16 @@
         },
         {
             "name": "friendsofphp/php-cs-fixer",
-            "version": "v2.13.1",
+            "version": "v2.14.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/FriendsOfPHP/PHP-CS-Fixer.git",
-                "reference": "54814c62d5beef3ba55297b9b3186ed8b8a1b161"
+                "reference": "b788ea0af899cedc8114dca7db119c93b6685da2"
             },
             "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/b788ea0af899cedc8114dca7db119c93b6685da2",
+                "reference": "b788ea0af899cedc8114dca7db119c93b6685da2",
                 "shasum": ""
             },
             "require": {
@@ -914,7 +914,7 @@
                 "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",
@@ -932,7 +932,7 @@
             "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",
@@ -952,6 +952,11 @@
                 "php-cs-fixer"
             ],
             "type": "application",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.14-dev"
+                }
+            },
             "autoload": {
                 "psr-4": {
                     "PhpCsFixer\\": "src/"
@@ -983,7 +988,7 @@
                 }
             ],
             "description": "A tool to automatically fix PHP code style",
-            "time": "2018-10-21T00:32:10+00:00"
+            "time": "2019-01-04T18:29:47+00:00"
         },
         {
             "name": "infection/infection",
@@ -4122,16 +4127,16 @@
         },
         {
             "name": "symfony/console",
-            "version": "v4.2.1",
+            "version": "v4.2.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "4dff24e5d01e713818805c1862d2e3f901ee7dd0"
+                "reference": "b0a03c1bb0fcbe288629956cf2f1dd3f1dc97522"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/console/zipball/4dff24e5d01e713818805c1862d2e3f901ee7dd0",
-                "reference": "4dff24e5d01e713818805c1862d2e3f901ee7dd0",
+                "url": "https://api.github.com/repos/symfony/console/zipball/b0a03c1bb0fcbe288629956cf2f1dd3f1dc97522",
+                "reference": "b0a03c1bb0fcbe288629956cf2f1dd3f1dc97522",
                 "shasum": ""
             },
             "require": {
@@ -4187,7 +4192,7 @@
             ],
             "description": "Symfony Console Component",
             "homepage": "https://symfony.com",
-            "time": "2018-11-27T07:40:44+00:00"
+            "time": "2019-01-04T15:13:53+00:00"
         },
         {
             "name": "symfony/contracts",
@@ -4259,16 +4264,16 @@
         },
         {
             "name": "symfony/event-dispatcher",
-            "version": "v4.2.1",
+            "version": "v4.2.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/event-dispatcher.git",
-                "reference": "921f49c3158a276d27c0d770a5a347a3b718b328"
+                "reference": "887de6d34c86cf0cb6cbf910afb170cdb743cb5e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/event-dispatcher/zipball/921f49c3158a276d27c0d770a5a347a3b718b328",
-                "reference": "921f49c3158a276d27c0d770a5a347a3b718b328",
+                "url": "https://api.github.com/repos/symfony/event-dispatcher/zipball/887de6d34c86cf0cb6cbf910afb170cdb743cb5e",
+                "reference": "887de6d34c86cf0cb6cbf910afb170cdb743cb5e",
                 "shasum": ""
             },
             "require": {
@@ -4319,20 +4324,20 @@
             ],
             "description": "Symfony EventDispatcher Component",
             "homepage": "https://symfony.com",
-            "time": "2018-12-01T08:52:38+00:00"
+            "time": "2019-01-05T16:37:49+00:00"
         },
         {
             "name": "symfony/filesystem",
-            "version": "v4.2.1",
+            "version": "v4.2.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/filesystem.git",
-                "reference": "2f4c8b999b3b7cadb2a69390b01af70886753710"
+                "reference": "c2ffd9a93f2d6c5be2f68a0aa7953cc229f871f8"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/filesystem/zipball/2f4c8b999b3b7cadb2a69390b01af70886753710",
-                "reference": "2f4c8b999b3b7cadb2a69390b01af70886753710",
+                "url": "https://api.github.com/repos/symfony/filesystem/zipball/c2ffd9a93f2d6c5be2f68a0aa7953cc229f871f8",
+                "reference": "c2ffd9a93f2d6c5be2f68a0aa7953cc229f871f8",
                 "shasum": ""
             },
             "require": {
@@ -4369,20 +4374,20 @@
             ],
             "description": "Symfony Filesystem Component",
             "homepage": "https://symfony.com",
-            "time": "2018-11-11T19:52:12+00:00"
+            "time": "2019-01-03T09:07:35+00:00"
         },
         {
             "name": "symfony/finder",
-            "version": "v4.2.1",
+            "version": "v4.2.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/finder.git",
-                "reference": "e53d477d7b5c4982d0e1bfd2298dbee63d01441d"
+                "reference": "9094d69e8c6ee3fe186a0ec5a4f1401e506071ce"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/finder/zipball/e53d477d7b5c4982d0e1bfd2298dbee63d01441d",
-                "reference": "e53d477d7b5c4982d0e1bfd2298dbee63d01441d",
+                "url": "https://api.github.com/repos/symfony/finder/zipball/9094d69e8c6ee3fe186a0ec5a4f1401e506071ce",
+                "reference": "9094d69e8c6ee3fe186a0ec5a4f1401e506071ce",
                 "shasum": ""
             },
             "require": {
@@ -4418,20 +4423,20 @@
             ],
             "description": "Symfony Finder Component",
             "homepage": "https://symfony.com",
-            "time": "2018-11-11T19:52:12+00:00"
+            "time": "2019-01-03T09:07:35+00:00"
         },
         {
             "name": "symfony/options-resolver",
-            "version": "v4.2.1",
+            "version": "v4.2.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/options-resolver.git",
-                "reference": "a9c38e8a3da2c03b3e71fdffa6efb0bda51390ba"
+                "reference": "fbcb106aeee72f3450298bf73324d2cc00d083d1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/options-resolver/zipball/a9c38e8a3da2c03b3e71fdffa6efb0bda51390ba",
-                "reference": "a9c38e8a3da2c03b3e71fdffa6efb0bda51390ba",
+                "url": "https://api.github.com/repos/symfony/options-resolver/zipball/fbcb106aeee72f3450298bf73324d2cc00d083d1",
+                "reference": "fbcb106aeee72f3450298bf73324d2cc00d083d1",
                 "shasum": ""
             },
             "require": {
@@ -4472,7 +4477,7 @@
                 "configuration",
                 "options"
             ],
-            "time": "2018-11-11T19:52:12+00:00"
+            "time": "2019-01-03T09:07:35+00:00"
         },
         {
             "name": "symfony/polyfill-ctype",
@@ -4707,16 +4712,16 @@
         },
         {
             "name": "symfony/process",
-            "version": "v4.2.1",
+            "version": "v4.2.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/process.git",
-                "reference": "2b341009ccec76837a7f46f59641b431e4d4c2b0"
+                "reference": "ea043ab5d8ed13b467a9087d81cb876aee7f689a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/process/zipball/2b341009ccec76837a7f46f59641b431e4d4c2b0",
-                "reference": "2b341009ccec76837a7f46f59641b431e4d4c2b0",
+                "url": "https://api.github.com/repos/symfony/process/zipball/ea043ab5d8ed13b467a9087d81cb876aee7f689a",
+                "reference": "ea043ab5d8ed13b467a9087d81cb876aee7f689a",
                 "shasum": ""
             },
             "require": {
@@ -4752,20 +4757,20 @@
             ],
             "description": "Symfony Process Component",
             "homepage": "https://symfony.com",
-            "time": "2018-11-20T16:22:05+00:00"
+            "time": "2019-01-03T14:48:52+00:00"
         },
         {
             "name": "symfony/stopwatch",
-            "version": "v4.2.1",
+            "version": "v4.2.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/stopwatch.git",
-                "reference": "ec076716412274e51f8a7ea675d9515e5c311123"
+                "reference": "af62b35760fc92c8dbdce659b4eebdfe0e6a0472"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/stopwatch/zipball/ec076716412274e51f8a7ea675d9515e5c311123",
-                "reference": "ec076716412274e51f8a7ea675d9515e5c311123",
+                "url": "https://api.github.com/repos/symfony/stopwatch/zipball/af62b35760fc92c8dbdce659b4eebdfe0e6a0472",
+                "reference": "af62b35760fc92c8dbdce659b4eebdfe0e6a0472",
                 "shasum": ""
             },
             "require": {
@@ -4802,7 +4807,7 @@
             ],
             "description": "Symfony Stopwatch Component",
             "homepage": "https://symfony.com",
-            "time": "2018-11-11T19:52:12+00:00"
+            "time": "2019-01-03T09:07:35+00:00"
         },
         {
             "name": "symfony/yaml",
diff --git a/tests/JsonDecodeOperatorTest.php b/tests/JsonDecodeOperatorTest.php
index 3785525..9bc4d06 100644
--- a/tests/JsonDecodeOperatorTest.php
+++ b/tests/JsonDecodeOperatorTest.php
@@ -6,10 +6,10 @@
 use ApiClients\Tools\TestUtilities\TestCase;
 use Exception;
 use Prophecy\Argument;
-use Rx\ObserverInterface;
-use Rx\React\Promise;
 use function React\Promise\reject;
 use function React\Promise\resolve;
+use Rx\ObserverInterface;
+use Rx\React\Promise;
 
 /**
  * @internal
diff --git a/tests/JsonEncodeOperatorTest.php b/tests/JsonEncodeOperatorTest.php
index b8c538c..0f2f11b 100644
--- a/tests/JsonEncodeOperatorTest.php
+++ b/tests/JsonEncodeOperatorTest.php
@@ -6,10 +6,10 @@
 use ApiClients\Tools\TestUtilities\TestCase;
 use Exception;
 use Prophecy\Argument;
-use Rx\ObserverInterface;
-use Rx\React\Promise;
 use function React\Promise\reject;
 use function React\Promise\resolve;
+use Rx\ObserverInterface;
+use Rx\React\Promise;
 
 /**
  * @internal