diff --git a/src/Symfony/Bridge/Doctrine/composer.json b/src/Symfony/Bridge/Doctrine/composer.json
index 3eb72935b6..67924be616 100644
--- a/src/Symfony/Bridge/Doctrine/composer.json
+++ b/src/Symfony/Bridge/Doctrine/composer.json
@@ -20,15 +20,15 @@
         "doctrine/common": "~2.3"
     },
     "require-dev": {
-        "symfony/stopwatch": "~2.2",
-        "symfony/dependency-injection": "~2.2",
-        "symfony/form": "~2.3,>=2.3.8",
-        "symfony/http-kernel": "~2.2",
-        "symfony/property-access": "~2.3",
-        "symfony/security": "~2.2",
-        "symfony/expression-language": "~2.2",
-        "symfony/validator": "~2.5,>=2.5.5",
-        "symfony/translation": "~2.0,>=2.0.5",
+        "symfony/stopwatch": "~2.2|~3.0.0",
+        "symfony/dependency-injection": "~2.2|~3.0.0",
+        "symfony/form": "~2.3,>=2.3.8|~3.0.0",
+        "symfony/http-kernel": "~2.2|~3.0.0",
+        "symfony/property-access": "~2.3|~3.0.0",
+        "symfony/security": "~2.2|~3.0.0",
+        "symfony/expression-language": "~2.2|~3.0.0",
+        "symfony/validator": "~2.5,>=2.5.5|~3.0.0",
+        "symfony/translation": "~2.0,>=2.0.5|~3.0.0",
         "doctrine/data-fixtures": "1.0.*",
         "doctrine/dbal": "~2.2",
         "doctrine/orm": "~2.2,>=2.2.3"
diff --git a/src/Symfony/Bridge/Monolog/composer.json b/src/Symfony/Bridge/Monolog/composer.json
index 4209fcd21b..aaa79dd051 100644
--- a/src/Symfony/Bridge/Monolog/composer.json
+++ b/src/Symfony/Bridge/Monolog/composer.json
@@ -20,14 +20,14 @@
         "monolog/monolog": "~1.11"
     },
     "require-dev": {
-        "symfony/http-kernel": "~2.4",
-        "symfony/console": "~2.4",
-        "symfony/event-dispatcher": "~2.2"
+        "symfony/http-kernel": "~2.4|~3.0.0",
+        "symfony/console": "~2.4|~3.0.0",
+        "symfony/event-dispatcher": "~2.2|~3.0.0"
     },
     "suggest": {
         "symfony/http-kernel": "For using the debugging handlers together with the response life cycle of the HTTP kernel.",
         "symfony/console": "For the possibility to show log messages in console commands depending on verbosity settings. You need version ~2.3 of the console for it.",
-        "symfony/event-dispatcher": "Needed when using log messages in console commands"
+        "symfony/event-dispatcher": "Needed when using log messages in console commands."
      },
     "autoload": {
         "psr-0": { "Symfony\\Bridge\\Monolog\\": "" }
diff --git a/src/Symfony/Bridge/Propel1/composer.json b/src/Symfony/Bridge/Propel1/composer.json
index 53b12e8cbd..f92f426424 100644
--- a/src/Symfony/Bridge/Propel1/composer.json
+++ b/src/Symfony/Bridge/Propel1/composer.json
@@ -17,14 +17,14 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/http-foundation": "~2.0,>=2.0.5",
-        "symfony/http-kernel": "~2.0,>=2.0.5",
-        "symfony/form": "~2.3,>=2.3.8",
-        "symfony/property-access": "~2.3",
+        "symfony/http-foundation": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/http-kernel": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/form": "~2.3,>=2.3.8|~3.0.0",
+        "symfony/property-access": "~2.3|~3.0.0",
         "propel/propel1": "~1.6,>=1.6.5"
     },
     "require-dev": {
-        "symfony/stopwatch": "~2.2"
+        "symfony/stopwatch": "~2.2|~3.0.0"
     },
     "autoload": {
         "psr-0": { "Symfony\\Bridge\\Propel1\\": "" }
diff --git a/src/Symfony/Bridge/ProxyManager/composer.json b/src/Symfony/Bridge/ProxyManager/composer.json
index cebc3f0fa9..a8d5c72bc7 100644
--- a/src/Symfony/Bridge/ProxyManager/composer.json
+++ b/src/Symfony/Bridge/ProxyManager/composer.json
@@ -17,11 +17,11 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/dependency-injection": "~2.3",
+        "symfony/dependency-injection": "~2.3|~3.0.0",
         "ocramius/proxy-manager": "~0.4|~1.0"
     },
     "require-dev": {
-        "symfony/config": "~2.3"
+        "symfony/config": "~2.3|~3.0.0"
     },
     "autoload": {
         "psr-0": {
diff --git a/src/Symfony/Bridge/Twig/composer.json b/src/Symfony/Bridge/Twig/composer.json
index 0558e6ca1f..8d2af5c52c 100644
--- a/src/Symfony/Bridge/Twig/composer.json
+++ b/src/Symfony/Bridge/Twig/composer.json
@@ -17,23 +17,23 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/security-csrf": "~2.4",
+        "symfony/security-csrf": "~2.4|~3.0.0",
         "twig/twig": "~1.13,>=1.13.1"
     },
     "require-dev": {
-        "symfony/finder": "~2.3",
-        "symfony/form": "~2.6",
-        "symfony/http-kernel": "~2.3",
-        "symfony/locale": "~2.0,>=2.0.5",
-        "symfony/routing": "~2.2",
-        "symfony/templating": "~2.1",
-        "symfony/translation": "~2.2",
-        "symfony/yaml": "~2.0,>=2.0.5",
-        "symfony/security": "~2.4",
-        "symfony/stopwatch": "~2.2",
-        "symfony/console": "~2.4",
-        "symfony/var-dumper": "~2.6",
-        "symfony/expression-language": "~2.4"
+        "symfony/finder": "~2.3|~3.0.0",
+        "symfony/form": "~2.6|~3.0.0",
+        "symfony/http-kernel": "~2.3|~3.0.0",
+        "symfony/locale": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/routing": "~2.2|~3.0.0",
+        "symfony/templating": "~2.1|~3.0.0",
+        "symfony/translation": "~2.2|~3.0.0",
+        "symfony/yaml": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/security": "~2.4|~3.0.0",
+        "symfony/stopwatch": "~2.2|~3.0.0",
+        "symfony/console": "~2.4|~3.0.0",
+        "symfony/var-dumper": "~2.6|~3.0.0",
+        "symfony/expression-language": "~2.4|~3.0.0"
     },
     "suggest": {
         "symfony/finder": "",
diff --git a/src/Symfony/Bundle/DebugBundle/composer.json b/src/Symfony/Bundle/DebugBundle/composer.json
index 19a584c8e0..8949b3f899 100644
--- a/src/Symfony/Bundle/DebugBundle/composer.json
+++ b/src/Symfony/Bundle/DebugBundle/composer.json
@@ -17,13 +17,13 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/http-kernel": "~2.6",
-        "symfony/twig-bridge": "~2.6",
-        "symfony/var-dumper": "~2.6"
+        "symfony/http-kernel": "~2.6|~3.0.0",
+        "symfony/twig-bridge": "~2.6|~3.0.0",
+        "symfony/var-dumper": "~2.6|~3.0.0"
     },
     "require-dev": {
-        "symfony/config": "~2.3",
-        "symfony/dependency-injection": "~2.3"
+        "symfony/config": "~2.3|~3.0.0",
+        "symfony/dependency-injection": "~2.3|~3.0.0"
     },
     "suggest": {
         "symfony/config": "For service container configuration",
diff --git a/src/Symfony/Bundle/FrameworkBundle/composer.json b/src/Symfony/Bundle/FrameworkBundle/composer.json
index 454f429d80..e426c32292 100644
--- a/src/Symfony/Bundle/FrameworkBundle/composer.json
+++ b/src/Symfony/Bundle/FrameworkBundle/composer.json
@@ -19,32 +19,32 @@
         "php": ">=5.3.3",
         "symfony/dependency-injection" : "~2.6,>=2.6.2",
         "symfony/config" : "~2.4",
-        "symfony/event-dispatcher": "~2.5",
-        "symfony/http-foundation": "~2.4.9|~2.5,>=2.5.4",
-        "symfony/http-kernel": "~2.6",
-        "symfony/filesystem": "~2.3",
-        "symfony/routing": "~2.2",
-        "symfony/security-core": "~2.6",
-        "symfony/security-csrf": "~2.6",
-        "symfony/stopwatch": "~2.3",
-        "symfony/templating": "~2.1",
-        "symfony/translation": "~2.6",
+        "symfony/event-dispatcher": "~2.5|~3.0.0",
+        "symfony/http-foundation": "~2.4.9|~2.5,>=2.5.4|~3.0.0",
+        "symfony/http-kernel": "~2.6|~3.0.0",
+        "symfony/filesystem": "~2.3|~3.0.0",
+        "symfony/routing": "~2.2|~3.0.0",
+        "symfony/security-core": "~2.6|~3.0.0",
+        "symfony/security-csrf": "~2.6|~3.0.0",
+        "symfony/stopwatch": "~2.3|~3.0.0",
+        "symfony/templating": "~2.1|~3.0.0",
+        "symfony/translation": "~2.6|~3.0.0",
         "doctrine/annotations": "~1.0"
     },
     "require-dev": {
-        "symfony/browser-kit": "~2.4",
-        "symfony/console": "~2.4,>=2.4.8",
-        "symfony/css-selector": "~2.0,>=2.0.5",
-        "symfony/dom-crawler": "~2.0,>=2.0.5",
-        "symfony/finder": "~2.0,>=2.0.5",
-        "symfony/locale": "~2.0,>=2.0.5",
-        "symfony/security": "~2.6",
-        "symfony/form": "~2.6",
-        "symfony/class-loader": "~2.1",
-        "symfony/expression-language": "~2.6",
-        "symfony/process": "~2.0,>=2.0.5",
-        "symfony/validator": "~2.5",
-        "symfony/yaml": "~2.0,>=2.0.5"
+        "symfony/browser-kit": "~2.4|~3.0.0",
+        "symfony/console": "~2.4,>=2.4.8|~3.0.0",
+        "symfony/css-selector": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/dom-crawler": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/finder": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/locale": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/security": "~2.6|~3.0.0",
+        "symfony/form": "~2.6|~3.0.0",
+        "symfony/class-loader": "~2.1|~3.0.0",
+        "symfony/expression-language": "~2.6|~3.0.0",
+        "symfony/process": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/validator": "~2.5|~3.0.0",
+        "symfony/yaml": "~2.0,>=2.0.5|~3.0.0"
     },
     "suggest": {
         "symfony/console": "For using the console commands",
diff --git a/src/Symfony/Bundle/SecurityBundle/composer.json b/src/Symfony/Bundle/SecurityBundle/composer.json
index 1bdcedf6ae..f2377266fe 100644
--- a/src/Symfony/Bundle/SecurityBundle/composer.json
+++ b/src/Symfony/Bundle/SecurityBundle/composer.json
@@ -17,24 +17,24 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/security": "~2.6",
-        "symfony/http-kernel": "~2.2"
+        "symfony/security": "~2.6|~3.0.0",
+        "symfony/http-kernel": "~2.2|~3.0.0"
     },
     "require-dev": {
-        "symfony/browser-kit": "~2.4",
-        "symfony/console": "~2.3",
-        "symfony/css-selector": "~2.0,>=2.0.5",
-        "symfony/dependency-injection": "~2.3",
-        "symfony/dom-crawler": "~2.0,>=2.0.5",
-        "symfony/form": "~2.4",
-        "symfony/framework-bundle": "~2.6",
-        "symfony/http-foundation": "~2.3",
-        "symfony/twig-bundle": "~2.2",
-        "symfony/twig-bridge": "~2.2,>=2.2.6",
-        "symfony/process": "~2.0,>=2.0.5",
-        "symfony/validator": "~2.5",
-        "symfony/yaml": "~2.0,>=2.0.5",
-        "symfony/expression-language": "~2.6",
+        "symfony/browser-kit": "~2.4|~3.0.0",
+        "symfony/console": "~2.3|~3.0.0",
+        "symfony/css-selector": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/dependency-injection": "~2.3|~3.0.0",
+        "symfony/dom-crawler": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/form": "~2.4|~3.0.0",
+        "symfony/framework-bundle": "~2.6|~3.0.0",
+        "symfony/http-foundation": "~2.3|~3.0.0",
+        "symfony/twig-bundle": "~2.2|~3.0.0",
+        "symfony/twig-bridge": "~2.2,>=2.2.6|~3.0.0",
+        "symfony/process": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/validator": "~2.5|~3.0.0",
+        "symfony/yaml": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/expression-language": "~2.6|~3.0.0",
         "doctrine/doctrine-bundle": "~1.2",
         "twig/twig": "~1.12"
     },
diff --git a/src/Symfony/Bundle/TwigBundle/composer.json b/src/Symfony/Bundle/TwigBundle/composer.json
index c42dfe7991..fbd58f7a9b 100644
--- a/src/Symfony/Bundle/TwigBundle/composer.json
+++ b/src/Symfony/Bundle/TwigBundle/composer.json
@@ -17,18 +17,18 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/twig-bridge": "~2.6",
-        "symfony/http-foundation": "~2.5",
-        "symfony/http-kernel": "~2.1"
+        "symfony/twig-bridge": "~2.6|~3.0.0",
+        "symfony/http-foundation": "~2.5|~3.0.0",
+        "symfony/http-kernel": "~2.1|~3.0.0"
     },
     "require-dev": {
-        "symfony/stopwatch": "~2.2",
-        "symfony/dependency-injection": "~2.2",
-        "symfony/expression-language": "~2.4",
-        "symfony/config": "~2.2",
-        "symfony/routing": "~2.1",
-        "symfony/templating": "~2.1",
-        "symfony/framework-bundle": "~2.1"
+        "symfony/stopwatch": "~2.2|~3.0.0",
+        "symfony/dependency-injection": "~2.2|~3.0.0",
+        "symfony/expression-language": "~2.4|~3.0.0",
+        "symfony/config": "~2.2|~3.0.0",
+        "symfony/routing": "~2.1|~3.0.0",
+        "symfony/templating": "~2.1|~3.0.0",
+        "symfony/framework-bundle": "~2.1|~3.0.0"
     },
     "autoload": {
         "psr-0": { "Symfony\\Bundle\\TwigBundle\\": "" }
diff --git a/src/Symfony/Bundle/WebProfilerBundle/composer.json b/src/Symfony/Bundle/WebProfilerBundle/composer.json
index 02c3eda556..27c2fe026c 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/composer.json
+++ b/src/Symfony/Bundle/WebProfilerBundle/composer.json
@@ -17,15 +17,15 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/http-kernel": "~2.4",
-        "symfony/routing": "~2.2",
-        "symfony/twig-bridge": "~2.2"
+        "symfony/http-kernel": "~2.4|~3.0.0",
+        "symfony/routing": "~2.2|~3.0.0",
+        "symfony/twig-bridge": "~2.2|~3.0.0"
     },
     "require-dev": {
-        "symfony/config": "~2.2",
-        "symfony/console": "~2.3",
-        "symfony/dependency-injection": "~2.2",
-        "symfony/stopwatch": "~2.2"
+        "symfony/config": "~2.2|~3.0.0",
+        "symfony/console": "~2.3|~3.0.0",
+        "symfony/dependency-injection": "~2.2|~3.0.0",
+        "symfony/stopwatch": "~2.2|~3.0.0"
     },
     "autoload": {
         "psr-0": { "Symfony\\Bundle\\WebProfilerBundle\\": "" }
diff --git a/src/Symfony/Component/BrowserKit/composer.json b/src/Symfony/Component/BrowserKit/composer.json
index 27c8a22539..e2a1ef1881 100644
--- a/src/Symfony/Component/BrowserKit/composer.json
+++ b/src/Symfony/Component/BrowserKit/composer.json
@@ -17,11 +17,11 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/dom-crawler": "~2.0,>=2.0.5"
+        "symfony/dom-crawler": "~2.0,>=2.0.5|~3.0.0"
     },
     "require-dev": {
-        "symfony/process": "~2.0,>=2.0.5",
-        "symfony/css-selector": "~2.0,>=2.0.5"
+        "symfony/process": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/css-selector": "~2.0,>=2.0.5|~3.0.0"
     },
     "suggest": {
         "symfony/process": ""
diff --git a/src/Symfony/Component/ClassLoader/composer.json b/src/Symfony/Component/ClassLoader/composer.json
index b87c486894..3f67bf9b6e 100644
--- a/src/Symfony/Component/ClassLoader/composer.json
+++ b/src/Symfony/Component/ClassLoader/composer.json
@@ -20,7 +20,7 @@
         "php": ">=5.3.3"
     },
     "require-dev": {
-        "symfony/finder": "~2.0,>=2.0.5"
+        "symfony/finder": "~2.0,>=2.0.5|~3.0.0"
     },
     "autoload": {
         "psr-0": { "Symfony\\Component\\ClassLoader\\": "" }
diff --git a/src/Symfony/Component/Config/composer.json b/src/Symfony/Component/Config/composer.json
index dd71f7c9fb..53c46d30b2 100644
--- a/src/Symfony/Component/Config/composer.json
+++ b/src/Symfony/Component/Config/composer.json
@@ -17,7 +17,7 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/filesystem": "~2.3"
+        "symfony/filesystem": "~2.3|~3.0.0"
     },
     "autoload": {
         "psr-0": { "Symfony\\Component\\Config\\": "" }
diff --git a/src/Symfony/Component/Console/composer.json b/src/Symfony/Component/Console/composer.json
index 743d375a39..40005358e6 100644
--- a/src/Symfony/Component/Console/composer.json
+++ b/src/Symfony/Component/Console/composer.json
@@ -19,8 +19,8 @@
         "php": ">=5.3.3"
     },
     "require-dev": {
-        "symfony/event-dispatcher": "~2.1",
-        "symfony/process": "~2.1",
+        "symfony/event-dispatcher": "~2.1|~3.0.0",
+        "symfony/process": "~2.1|~3.0.0",
         "psr/log": "~1.0"
     },
     "suggest": {
diff --git a/src/Symfony/Component/Debug/composer.json b/src/Symfony/Component/Debug/composer.json
index a58e409022..900b068949 100644
--- a/src/Symfony/Component/Debug/composer.json
+++ b/src/Symfony/Component/Debug/composer.json
@@ -20,8 +20,8 @@
         "psr/log": "~1.0"
     },
     "require-dev": {
-        "symfony/http-kernel": "~2.2",
-        "symfony/http-foundation": "~2.1"
+        "symfony/http-kernel": "~2.2|~3.0.0",
+        "symfony/http-foundation": "~2.1|~3.0.0"
     },
     "suggest": {
         "symfony/http-foundation": "",
diff --git a/src/Symfony/Component/DependencyInjection/composer.json b/src/Symfony/Component/DependencyInjection/composer.json
index ac87eab767..4eef6e7645 100644
--- a/src/Symfony/Component/DependencyInjection/composer.json
+++ b/src/Symfony/Component/DependencyInjection/composer.json
@@ -19,9 +19,9 @@
         "php": ">=5.3.3"
     },
     "require-dev": {
-        "symfony/yaml": "~2.1",
-        "symfony/config": "~2.2",
-        "symfony/expression-language": "~2.6"
+        "symfony/yaml": "~2.1|~3.0.0",
+        "symfony/config": "~2.2|~3.0.0",
+        "symfony/expression-language": "~2.6|~3.0.0"
     },
     "suggest": {
         "symfony/yaml": "",
diff --git a/src/Symfony/Component/DomCrawler/composer.json b/src/Symfony/Component/DomCrawler/composer.json
index b6bee75974..cca3278b7b 100644
--- a/src/Symfony/Component/DomCrawler/composer.json
+++ b/src/Symfony/Component/DomCrawler/composer.json
@@ -19,7 +19,7 @@
         "php": ">=5.3.3"
     },
     "require-dev": {
-        "symfony/css-selector": "~2.3"
+        "symfony/css-selector": "~2.3|~3.0.0"
     },
     "suggest": {
         "symfony/css-selector": ""
diff --git a/src/Symfony/Component/EventDispatcher/composer.json b/src/Symfony/Component/EventDispatcher/composer.json
index 2fd58aa55d..549267779d 100644
--- a/src/Symfony/Component/EventDispatcher/composer.json
+++ b/src/Symfony/Component/EventDispatcher/composer.json
@@ -19,10 +19,10 @@
         "php": ">=5.3.3"
     },
     "require-dev": {
-        "symfony/dependency-injection": "~2.6",
-        "symfony/expression-language": "~2.6",
-        "symfony/config": "~2.0,>=2.0.5",
-        "symfony/stopwatch": "~2.3",
+        "symfony/dependency-injection": "~2.6|~3.0.0",
+        "symfony/expression-language": "~2.6|~3.0.0",
+        "symfony/config": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/stopwatch": "~2.3|~3.0.0",
         "psr/log": "~1.0"
     },
     "suggest": {
diff --git a/src/Symfony/Component/Form/composer.json b/src/Symfony/Component/Form/composer.json
index 0a08a9d554..b336c32292 100644
--- a/src/Symfony/Component/Form/composer.json
+++ b/src/Symfony/Component/Form/composer.json
@@ -17,18 +17,18 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/event-dispatcher": "~2.1",
-        "symfony/intl": "~2.3",
-        "symfony/options-resolver": "~2.1",
-        "symfony/property-access": "~2.3"
+        "symfony/event-dispatcher": "~2.1|~3.0.0",
+        "symfony/intl": "~2.3|~3.0.0",
+        "symfony/options-resolver": "~2.1|~3.0.0",
+        "symfony/property-access": "~2.3|~3.0.0"
     },
     "require-dev": {
         "doctrine/collections": "~1.0",
-        "symfony/validator": "~2.6",
-        "symfony/http-foundation": "~2.2",
-        "symfony/http-kernel": "~2.4",
-        "symfony/security-csrf": "~2.4",
-        "symfony/translation": "~2.0,>=2.0.5"
+        "symfony/validator": "~2.6|~3.0.0",
+        "symfony/http-foundation": "~2.2|~3.0.0",
+        "symfony/http-kernel": "~2.4|~3.0.0",
+        "symfony/security-csrf": "~2.4|~3.0.0",
+        "symfony/translation": "~2.0,>=2.0.5|~3.0.0"
     },
     "suggest": {
         "symfony/validator": "For form validation.",
diff --git a/src/Symfony/Component/HttpFoundation/composer.json b/src/Symfony/Component/HttpFoundation/composer.json
index e0d86584ad..e4172d0313 100644
--- a/src/Symfony/Component/HttpFoundation/composer.json
+++ b/src/Symfony/Component/HttpFoundation/composer.json
@@ -19,7 +19,7 @@
         "php": ">=5.3.3"
     },
     "require-dev": {
-        "symfony/expression-language": "~2.4"
+        "symfony/expression-language": "~2.4|~3.0.0"
     },
     "autoload": {
         "psr-0": { "Symfony\\Component\\HttpFoundation\\": "" },
diff --git a/src/Symfony/Component/HttpKernel/composer.json b/src/Symfony/Component/HttpKernel/composer.json
index bbd1b8d761..91e6b1ce3f 100644
--- a/src/Symfony/Component/HttpKernel/composer.json
+++ b/src/Symfony/Component/HttpKernel/composer.json
@@ -17,27 +17,27 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/event-dispatcher": "~2.5.9|~2.6,>=2.6.2",
-        "symfony/http-foundation": "~2.5,>=2.5.4",
-        "symfony/debug": "~2.6",
+        "symfony/event-dispatcher": "~2.5.9|~2.6,>=2.6.2|~3.0.0",
+        "symfony/http-foundation": "~2.5,>=2.5.4|~3.0.0",
+        "symfony/debug": "~2.6|~3.0.0",
         "psr/log": "~1.0"
     },
     "require-dev": {
-        "symfony/browser-kit": "~2.3",
-        "symfony/class-loader": "~2.1",
-        "symfony/config": "~2.0,>=2.0.5",
-        "symfony/console": "~2.3",
-        "symfony/css-selector": "~2.0,>=2.0.5",
-        "symfony/dependency-injection": "~2.2",
-        "symfony/dom-crawler": "~2.0,>=2.0.5",
-        "symfony/expression-language": "~2.4",
-        "symfony/finder": "~2.0,>=2.0.5",
-        "symfony/process": "~2.0,>=2.0.5",
-        "symfony/routing": "~2.2",
-        "symfony/stopwatch": "~2.3",
-        "symfony/templating": "~2.2",
-        "symfony/translation": "~2.0,>=2.0.5",
-        "symfony/var-dumper": "~2.6"
+        "symfony/browser-kit": "~2.3|~3.0.0",
+        "symfony/class-loader": "~2.1|~3.0.0",
+        "symfony/config": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/console": "~2.3|~3.0.0",
+        "symfony/css-selector": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/dependency-injection": "~2.2|~3.0.0",
+        "symfony/dom-crawler": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/expression-language": "~2.4|~3.0.0",
+        "symfony/finder": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/process": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/routing": "~2.2|~3.0.0",
+        "symfony/stopwatch": "~2.3|~3.0.0",
+        "symfony/templating": "~2.2|~3.0.0",
+        "symfony/translation": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/var-dumper": "~2.6|~3.0.0"
     },
     "suggest": {
         "symfony/browser-kit": "",
diff --git a/src/Symfony/Component/Intl/composer.json b/src/Symfony/Component/Intl/composer.json
index d5cbf21a8d..efd64683f3 100644
--- a/src/Symfony/Component/Intl/composer.json
+++ b/src/Symfony/Component/Intl/composer.json
@@ -27,7 +27,7 @@
         "php": ">=5.3.3"
     },
     "require-dev": {
-        "symfony/filesystem": ">=2.1"
+        "symfony/filesystem": "~2.1|~3.0.0"
     },
     "suggest": {
         "ext-intl": "to use the component with locales other than \"en\""
diff --git a/src/Symfony/Component/Locale/composer.json b/src/Symfony/Component/Locale/composer.json
index 02461a174d..5b5f449b47 100644
--- a/src/Symfony/Component/Locale/composer.json
+++ b/src/Symfony/Component/Locale/composer.json
@@ -17,7 +17,7 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/intl": ">=2.3"
+        "symfony/intl": "~2.3|~3.0.0"
     },
     "autoload": {
         "psr-0": { "Symfony\\Component\\Locale\\": "" }
diff --git a/src/Symfony/Component/Routing/composer.json b/src/Symfony/Component/Routing/composer.json
index 205267c36d..7c0ba865d5 100644
--- a/src/Symfony/Component/Routing/composer.json
+++ b/src/Symfony/Component/Routing/composer.json
@@ -19,10 +19,10 @@
         "php": ">=5.3.3"
     },
     "require-dev": {
-        "symfony/config": "~2.2",
-        "symfony/http-foundation": "~2.3",
-        "symfony/yaml": "~2.0,>=2.0.5",
-        "symfony/expression-language": "~2.4",
+        "symfony/config": "~2.2|~3.0.0",
+        "symfony/http-foundation": "~2.3|~3.0.0",
+        "symfony/yaml": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/expression-language": "~2.4|~3.0.0",
         "doctrine/annotations": "~1.0",
         "doctrine/common": "~2.2",
         "psr/log": "~1.0"
diff --git a/src/Symfony/Component/Security/Acl/composer.json b/src/Symfony/Component/Security/Acl/composer.json
index 8f65f5034a..9eadd66498 100644
--- a/src/Symfony/Component/Security/Acl/composer.json
+++ b/src/Symfony/Component/Security/Acl/composer.json
@@ -17,7 +17,7 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/security-core": "~2.4"
+        "symfony/security-core": "~2.4|~3.0.0"
     },
     "require-dev": {
         "doctrine/common": "~2.2",
diff --git a/src/Symfony/Component/Security/Core/composer.json b/src/Symfony/Component/Security/Core/composer.json
index 2fc50f4e90..56240d851d 100644
--- a/src/Symfony/Component/Security/Core/composer.json
+++ b/src/Symfony/Component/Security/Core/composer.json
@@ -19,11 +19,11 @@
         "php": ">=5.3.3"
     },
     "require-dev": {
-        "symfony/event-dispatcher": "~2.1",
-        "symfony/expression-language": "~2.6",
-        "symfony/http-foundation": "~2.4",
-        "symfony/translation": "~2.0,>=2.0.5",
-        "symfony/validator": "~2.5,>=2.5.5",
+        "symfony/event-dispatcher": "~2.1|~3.0.0",
+        "symfony/expression-language": "~2.6|~3.0.0",
+        "symfony/http-foundation": "~2.4|~3.0.0",
+        "symfony/translation": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/validator": "~2.5,>=2.5.5|~3.0.0",
         "psr/log": "~1.0",
         "ircmaxell/password-compat": "1.0.*"
     },
diff --git a/src/Symfony/Component/Security/Csrf/composer.json b/src/Symfony/Component/Security/Csrf/composer.json
index 0ed6428df0..afabb81000 100644
--- a/src/Symfony/Component/Security/Csrf/composer.json
+++ b/src/Symfony/Component/Security/Csrf/composer.json
@@ -17,10 +17,10 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/security-core": "~2.4"
+        "symfony/security-core": "~2.4|~3.0.0"
     },
     "require-dev": {
-        "symfony/http-foundation": "~2.1"
+        "symfony/http-foundation": "~2.1|~3.0.0"
     },
     "suggest": {
         "symfony/http-foundation": "For using the class SessionTokenStorage."
diff --git a/src/Symfony/Component/Security/Http/composer.json b/src/Symfony/Component/Security/Http/composer.json
index 58f443d5a6..b75e1d67d7 100644
--- a/src/Symfony/Component/Security/Http/composer.json
+++ b/src/Symfony/Component/Security/Http/composer.json
@@ -17,14 +17,14 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/security-core": "~2.6",
-        "symfony/event-dispatcher": "~2.1",
-        "symfony/http-foundation": "~2.4",
-        "symfony/http-kernel": "~2.4"
+        "symfony/security-core": "~2.6|~3.0.0",
+        "symfony/event-dispatcher": "~2.1|~3.0.0",
+        "symfony/http-foundation": "~2.4|~3.0.0",
+        "symfony/http-kernel": "~2.4|~3.0.0"
     },
     "require-dev": {
-        "symfony/routing": "~2.2",
-        "symfony/security-csrf": "~2.4",
+        "symfony/routing": "~2.2|~3.0.0",
+        "symfony/security-csrf": "~2.4|~3.0.0",
         "psr/log": "~1.0"
     },
     "suggest": {
diff --git a/src/Symfony/Component/Security/composer.json b/src/Symfony/Component/Security/composer.json
index f1abdb3932..fac11c4b32 100644
--- a/src/Symfony/Component/Security/composer.json
+++ b/src/Symfony/Component/Security/composer.json
@@ -17,9 +17,9 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/event-dispatcher": "~2.2",
-        "symfony/http-foundation": "~2.1",
-        "symfony/http-kernel": "~2.4"
+        "symfony/event-dispatcher": "~2.2|~3.0.0",
+        "symfony/http-foundation": "~2.1|~3.0.0",
+        "symfony/http-kernel": "~2.4|~3.0.0"
     },
     "replace": {
         "symfony/security-acl": "self.version",
@@ -28,15 +28,15 @@
         "symfony/security-http": "self.version"
     },
     "require-dev": {
-        "symfony/locale": "~2.0,>=2.0.5",
-        "symfony/routing": "~2.2",
-        "symfony/translation": "~2.0,>=2.0.5",
-        "symfony/validator": "~2.5,>=2.5.5",
+        "symfony/locale": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/routing": "~2.2|~3.0.0",
+        "symfony/translation": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/validator": "~2.5,>=2.5.5|~3.0.0",
         "doctrine/common": "~2.2",
         "doctrine/dbal": "~2.2",
         "psr/log": "~1.0",
         "ircmaxell/password-compat": "~1.0",
-        "symfony/expression-language": "~2.6"
+        "symfony/expression-language": "~2.6|~3.0.0"
     },
     "suggest": {
         "symfony/class-loader": "For using the ACL generateSql script",
diff --git a/src/Symfony/Component/Serializer/composer.json b/src/Symfony/Component/Serializer/composer.json
index 8338fe6af1..dbeef2e2ad 100644
--- a/src/Symfony/Component/Serializer/composer.json
+++ b/src/Symfony/Component/Serializer/composer.json
@@ -19,8 +19,8 @@
         "php": ">=5.3.3"
     },
     "require-dev": {
-        "symfony/yaml": "~2.0",
-        "symfony/config": "~2.2",
+        "symfony/yaml": "~2.0|~3.0.0",
+        "symfony/config": "~2.2|~3.0.0",
         "doctrine/annotations": "~1.0",
         "doctrine/cache": "~1.0"
     },
diff --git a/src/Symfony/Component/Translation/composer.json b/src/Symfony/Component/Translation/composer.json
index 4973d4929a..17e74fbe63 100644
--- a/src/Symfony/Component/Translation/composer.json
+++ b/src/Symfony/Component/Translation/composer.json
@@ -19,9 +19,9 @@
         "php": ">=5.3.3"
     },
     "require-dev": {
-        "symfony/config": "~2.3,>=2.3.12",
-        "symfony/intl": "~2.3",
-        "symfony/yaml": "~2.2",
+        "symfony/config": "~2.3,>=2.3.12|~3.0.0",
+        "symfony/intl": "~2.3|~3.0.0",
+        "symfony/yaml": "~2.2|~3.0.0",
         "psr/log": "~1.0"
     },
     "suggest": {
diff --git a/src/Symfony/Component/Validator/composer.json b/src/Symfony/Component/Validator/composer.json
index 33d8c0fff2..8a9c0b5b77 100644
--- a/src/Symfony/Component/Validator/composer.json
+++ b/src/Symfony/Component/Validator/composer.json
@@ -17,15 +17,15 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/translation": "~2.0,>=2.0.5"
+        "symfony/translation": "~2.0,>=2.0.5|~3.0.0"
     },
     "require-dev": {
-        "symfony/http-foundation": "~2.1",
-        "symfony/intl": "~2.3",
-        "symfony/yaml": "~2.0,>=2.0.5",
-        "symfony/config": "~2.2",
-        "symfony/property-access": "~2.3",
-        "symfony/expression-language": "~2.4",
+        "symfony/http-foundation": "~2.1|~3.0.0",
+        "symfony/intl": "~2.3|~3.0.0",
+        "symfony/yaml": "~2.0,>=2.0.5|~3.0.0",
+        "symfony/config": "~2.2|~3.0.0",
+        "symfony/property-access": "~2.3|~3.0.0",
+        "symfony/expression-language": "~2.4|~3.0.0",
         "doctrine/annotations": "~1.0",
         "doctrine/cache": "~1.0",
         "egulias/email-validator": "~1.2,>=1.2.1"