diff --git a/.gitignore b/.gitignore
index 0f33c73..c6e9aa2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,4 +8,3 @@ silverstripe-cache
 .idea
 .DS_Store
 vendor/
-composer.lock
\ No newline at end of file
diff --git a/composer.json b/composer.json
index 162cb0d..be1648e 100644
--- a/composer.json
+++ b/composer.json
@@ -3,8 +3,8 @@
 	"description": "The SilverStripe Framework Installer",
 	"require": {
 		"php": ">=5.3.2",
-		"silverstripe/cms": "3.0.*@stable",
-		"silverstripe/framework": "3.0.*@stable",
+		"silverstripe/cms": "self.version",
+		"silverstripe/framework": "self.version",
 		"silverstripe-themes/simple": "*"
 	},
 	"config": {
diff --git a/composer.lock b/composer.lock
new file mode 100644
index 0000000..83ea3f8
--- /dev/null
+++ b/composer.lock
@@ -0,0 +1,226 @@
+{
+    "_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": "351c3c25e8ad3f3e9bec6672374d4746",
+    "packages": [
+        {
+            "name": "composer/installers",
+            "version": "dev-master",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/composer/installers.git",
+                "reference": "3e3c4ace757bd7b9d11b9dc6b7fd2f4ef57dc8c1"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/composer/installers/zipball/3e3c4ace757bd7b9d11b9dc6b7fd2f4ef57dc8c1",
+                "reference": "3e3c4ace757bd7b9d11b9dc6b7fd2f4ef57dc8c1",
+                "shasum": ""
+            },
+            "replace": {
+                "shama/baton": "*"
+            },
+            "require-dev": {
+                "composer/composer": "1.0.*@dev",
+                "phpunit/phpunit": "3.7.*"
+            },
+            "type": "composer-installer",
+            "extra": {
+                "class": "Composer\\Installers\\Installer",
+                "branch-alias": {
+                    "dev-master": "1.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "Composer\\Installers\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Kyle Robinson Young",
+                    "email": "kyle@dontkry.com",
+                    "homepage": "https://github.com/shama",
+                    "role": "Developer"
+                }
+            ],
+            "description": "A multi-framework Composer library installer",
+            "homepage": "http://composer.github.com/installers/",
+            "keywords": [
+                "TYPO3 Flow",
+                "TYPO3 Neos",
+                "agl",
+                "cakephp",
+                "codeigniter",
+                "drupal",
+                "fuelphp",
+                "installer",
+                "joomla",
+                "kohana",
+                "laravel",
+                "li3",
+                "lithium",
+                "mako",
+                "phpbb",
+                "ppi",
+                "silverstripe",
+                "symfony",
+                "wordpress",
+                "zend"
+            ],
+            "time": "2013-05-25 02:21:36"
+        },
+        {
+            "name": "silverstripe-themes/simple",
+            "version": "dev-master",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/silverstripe-themes/silverstripe-simple.git",
+                "reference": "0c3bc660a796ffba6e9fbb0da47fe20fa33af3b3"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/silverstripe-themes/silverstripe-simple/zipball/0c3bc660a796ffba6e9fbb0da47fe20fa33af3b3",
+                "reference": "0c3bc660a796ffba6e9fbb0da47fe20fa33af3b3",
+                "shasum": ""
+            },
+            "require": {
+                "composer/installers": "*",
+                "silverstripe/framework": ">=3.0"
+            },
+            "type": "silverstripe-theme",
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sara Tušar (Innovaif)",
+                    "homepage": "http://www.saratusar.com"
+                }
+            ],
+            "description": "The SilverStripe simple theme (default SilverStripe 3 theme)",
+            "keywords": [
+                "silverstripe",
+                "theme"
+            ],
+            "time": "2013-05-08 06:38:58"
+        },
+        {
+            "name": "silverstripe/cms",
+            "version": "3.0.x-dev",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/silverstripe/silverstripe-cms.git",
+                "reference": "2809b009a17435ac0fa25f5df89a88f316ee517b"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/silverstripe/silverstripe-cms/zipball/2809b009a17435ac0fa25f5df89a88f316ee517b",
+                "reference": "2809b009a17435ac0fa25f5df89a88f316ee517b",
+                "shasum": ""
+            },
+            "require": {
+                "composer/installers": "*",
+                "php": ">=5.3.2",
+                "silverstripe/framework": "3.0.*"
+            },
+            "type": "silverstripe-module",
+            "autoload": {
+                "classmap": [
+                    "tests/behat/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "SilverStripe",
+                    "homepage": "http://silverstripe.com"
+                },
+                {
+                    "name": "The SilverStripe Community",
+                    "homepage": "http://silverstripe.org"
+                }
+            ],
+            "description": "The SilverStripe Content Management System",
+            "homepage": "http://silverstripe.org",
+            "keywords": [
+                "cms",
+                "silverstripe"
+            ],
+            "time": "2013-05-25 07:59:08"
+        },
+        {
+            "name": "silverstripe/framework",
+            "version": "3.0.x-dev",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/silverstripe/silverstripe-framework.git",
+                "reference": "f6fbd78cd9c11d5a316335b0dd751a2902e76a0a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/silverstripe/silverstripe-framework/zipball/f6fbd78cd9c11d5a316335b0dd751a2902e76a0a",
+                "reference": "f6fbd78cd9c11d5a316335b0dd751a2902e76a0a",
+                "shasum": ""
+            },
+            "require": {
+                "composer/installers": "*",
+                "php": ">=5.3.2"
+            },
+            "type": "silverstripe-module",
+            "autoload": {
+                "classmap": [
+                    "tests/behat/features/bootstrap"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "SilverStripe",
+                    "homepage": "http://silverstripe.com"
+                },
+                {
+                    "name": "The SilverStripe Community",
+                    "homepage": "http://silverstripe.org"
+                }
+            ],
+            "description": "The SilverStripe framework",
+            "homepage": "http://silverstripe.org",
+            "keywords": [
+                "framework",
+                "silverstripe"
+            ],
+            "time": "2013-05-25 06:50:41"
+        }
+    ],
+    "packages-dev": [
+
+    ],
+    "aliases": [
+
+    ],
+    "minimum-stability": "dev",
+    "stability-flags": {
+        "silverstripe/cms": 20,
+        "silverstripe/framework": 20
+    },
+    "platform": {
+        "php": ">=5.3.2"
+    },
+    "platform-dev": [
+
+    ]
+}