diff --git a/composer.json b/composer.json
index 5e03e3a..26811e1 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
         "php": ">=7.1",
         "ext-curl": "*",
         "guzzle/guzzle": "~3.7",
-        "jms/serializer": "~0.12 || ~1.4",
+        "jms/serializer": "~0.12 || ~1.4.2",
         "symfony/validator": "2.8.*"
     },
     "require-dev": {
diff --git a/composer.lock b/composer.lock
index b9af9d6..906b2d0 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "30a8a446d0ad1f6c6aa41f4ef612b0f6",
+    "content-hash": "464b4746b38f4b99a1f77d9f83b80d98",
     "packages": [
         {
             "name": "doctrine/annotations",
@@ -366,24 +366,24 @@
         },
         {
             "name": "jms/serializer",
-            "version": "1.12.1",
+            "version": "1.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/schmittjoh/serializer.git",
-                "reference": "93d6e03fcb71d45854cc44b5a84d645c02c5d763"
+                "reference": "f39d8b4660d5cef43b0c3265ce642173d9b2c58b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/schmittjoh/serializer/zipball/93d6e03fcb71d45854cc44b5a84d645c02c5d763",
-                "reference": "93d6e03fcb71d45854cc44b5a84d645c02c5d763",
+                "url": "https://api.github.com/repos/schmittjoh/serializer/zipball/f39d8b4660d5cef43b0c3265ce642173d9b2c58b",
+                "reference": "f39d8b4660d5cef43b0c3265ce642173d9b2c58b",
                 "shasum": ""
             },
             "require": {
                 "doctrine/annotations": "^1.0",
                 "doctrine/instantiator": "^1.0.3",
-                "jms/metadata": "^1.3",
+                "jms/metadata": "~1.1",
                 "jms/parser-lib": "1.*",
-                "php": "^5.5|^7.0",
+                "php": ">=5.5.0",
                 "phpcollection/phpcollection": "~0.1",
                 "phpoption/phpoption": "^1.1"
             },
@@ -397,25 +397,20 @@
                 "jackalope/jackalope-doctrine-dbal": "^1.1.5",
                 "phpunit/phpunit": "^4.8|^5.0",
                 "propel/propel1": "~1.7",
-                "psr/container": "^1.0",
-                "symfony/dependency-injection": "^2.7|^3.3|^4.0",
-                "symfony/expression-language": "^2.6|^3.0",
                 "symfony/filesystem": "^2.1",
-                "symfony/form": "~2.1|^3.0",
-                "symfony/translation": "^2.1|^3.0",
-                "symfony/validator": "^2.2|^3.0",
-                "symfony/yaml": "^2.1|^3.0",
+                "symfony/form": "~2.1",
+                "symfony/translation": "^2.1",
+                "symfony/validator": "^2.2",
+                "symfony/yaml": "^2.1",
                 "twig/twig": "~1.12|~2.0"
             },
             "suggest": {
-                "doctrine/cache": "Required if you like to use cache functionality.",
-                "doctrine/collections": "Required if you like to use doctrine collection types as ArrayCollection.",
                 "symfony/yaml": "Required if you'd like to serialize data to YAML format."
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-1.x": "1.11-dev"
+                    "dev-master": "1.4-dev"
                 }
             },
             "autoload": {
@@ -425,13 +420,9 @@
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "MIT"
+                "Apache2"
             ],
             "authors": [
-                {
-                    "name": "Asmir Mustafic",
-                    "email": "goetas@gmail.com"
-                },
                 {
                     "name": "Johannes M. Schmitt",
                     "email": "schmittjoh@gmail.com"
@@ -446,7 +437,7 @@
                 "serialization",
                 "xml"
             ],
-            "time": "2018-06-01T12:10:12+00:00"
+            "time": "2016-11-13T10:20:11+00:00"
         },
         {
             "name": "phpcollection/phpcollection",