diff --git a/composer.json b/composer.json
index 9809eb8..c31c754 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,8 @@
   ],
   "require":      {
     "php": ">= 5.3.3",
-    "jms/parser-lib": "dev-master"
+    "jms/parser-lib": "dev-master",
+    "doctrine/common": "~2.2"
   },
   "autoload": {
     "psr-0": {
diff --git a/composer.lock b/composer.lock
index 087d588..2425d88 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,6 +1,79 @@
 {
-    "hash": "6aabe7b13fcf2af4eeb25983a1c6de35",
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file"
+    ],
+    "hash": "f9ac90086b79cb53e8a623a0d533bd4b",
     "packages": [
+        {
+            "name": "doctrine/common",
+            "version": "2.3.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/doctrine/common",
+                "reference": "2.3.0"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://github.com/doctrine/common/zipball/2.3.0",
+                "reference": "2.3.0",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.2"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.3.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "Doctrine\\Common": "lib/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jonathan Wage",
+                    "email": "jonwage@gmail.com",
+                    "homepage": "http://www.jwage.com/"
+                },
+                {
+                    "name": "Guilherme Blanco",
+                    "email": "guilhermeblanco@gmail.com",
+                    "homepage": "http://www.instaclick.com"
+                },
+                {
+                    "name": "Roman Borschel",
+                    "email": "roman@code-factory.org"
+                },
+                {
+                    "name": "Benjamin Eberlei",
+                    "email": "kontakt@beberlei.de"
+                },
+                {
+                    "name": "Johannes Schmitt",
+                    "email": "schmittjoh@gmail.com",
+                    "homepage": "https://github.com/schmittjoh",
+                    "role": "Developer of wrapped JMSSerializerBundle"
+                }
+            ],
+            "description": "Common Library for Doctrine projects",
+            "homepage": "http://www.doctrine-project.org",
+            "keywords": [
+                "annotations",
+                "collections",
+                "eventmanager",
+                "persistence",
+                "spl"
+            ],
+            "time": "2012-09-19 22:55:18"
+        },
         {
             "name": "jms/parser-lib",
             "version": "dev-master",
@@ -18,14 +91,12 @@
             "require": {
                 "phpoption/phpoption": ">=0.9,<2.0-dev"
             },
-            "time": "2012-11-30 08:11:04",
             "type": "library",
             "extra": {
                 "branch-alias": {
                     "dev-master": "1.1-dev"
                 }
             },
-            "installation-source": "source",
             "autoload": {
                 "psr-0": {
                     "JMS\\": "src/"
@@ -35,33 +106,32 @@
             "license": [
                 "Apache2"
             ],
-            "description": "A library for easily creating recursive-descent parsers."
+            "description": "A library for easily creating recursive-descent parsers.",
+            "time": "2012-11-30 08:11:04"
         },
         {
             "name": "phpoption/phpoption",
-            "version": "1.0.0",
+            "version": "1.2.0",
             "source": {
                 "type": "git",
-                "url": "git://github.com/schmittjoh/php-option",
-                "reference": "1.0.0"
+                "url": "https://github.com/schmittjoh/php-option.git",
+                "reference": "1.2.0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/schmittjoh/php-option/archive/1.0.0.zip",
-                "reference": "1.0.0",
+                "url": "https://api.github.com/repos/schmittjoh/php-option/zipball/1.2.0",
+                "reference": "1.2.0",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.3.0"
             },
-            "time": "2012-11-18 14:14:12",
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0-dev"
+                    "dev-master": "1.2-dev"
                 }
             },
-            "installation-source": "dist",
             "autoload": {
                 "psr-0": {
                     "PhpOption\\": "src/"
@@ -75,25 +145,34 @@
                 {
                     "name": "Johannes M. Schmitt",
                     "email": "schmittjoh@gmail.com",
-                    "homepage": "http://jmsyst.com",
+                    "homepage": "https://github.com/schmittjoh",
                     "role": "Developer of wrapped JMSSerializerBundle"
                 }
             ],
             "description": "Option Type for PHP",
             "keywords": [
-                "php",
                 "language",
-                "type",
-                "option"
-            ]
+                "option",
+                "php",
+                "type"
+            ],
+            "time": "2013-03-25 02:51:40"
         }
     ],
-    "packages-dev": null,
+    "packages-dev": [
+
+    ],
     "aliases": [
 
     ],
     "minimum-stability": "stable",
     "stability-flags": {
         "jms/parser-lib": 20
-    }
+    },
+    "platform": {
+        "php": ">= 5.3.3"
+    },
+    "platform-dev": [
+
+    ]
 }