diff --git a/src/Symfony/Bridge/Doctrine/composer.json b/src/Symfony/Bridge/Doctrine/composer.json
index e809a473fe..33c6956320 100644
--- a/src/Symfony/Bridge/Doctrine/composer.json
+++ b/src/Symfony/Bridge/Doctrine/composer.json
@@ -30,6 +30,7 @@
         "psr-0": { "Symfony\\Bridge\\Doctrine": "" }
     },
     "target-dir": "Symfony/Bridge/Doctrine",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Bridge/Monolog/composer.json b/src/Symfony/Bridge/Monolog/composer.json
index 3375b49e71..d0e36b525e 100644
--- a/src/Symfony/Bridge/Monolog/composer.json
+++ b/src/Symfony/Bridge/Monolog/composer.json
@@ -24,6 +24,7 @@
         "psr-0": { "Symfony\\Bridge\\Monolog": "" }
     },
     "target-dir": "Symfony/Bridge/Monolog",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Bridge/Propel1/composer.json b/src/Symfony/Bridge/Propel1/composer.json
index f716f02aa6..b3955bf85c 100644
--- a/src/Symfony/Bridge/Propel1/composer.json
+++ b/src/Symfony/Bridge/Propel1/composer.json
@@ -26,6 +26,7 @@
         "psr-0": { "Symfony\\Bridge\\Propel1": "" }
     },
     "target-dir": "Symfony/Bridge/Propel1",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Bridge/Swiftmailer/composer.json b/src/Symfony/Bridge/Swiftmailer/composer.json
index 9a10dd5c8b..f3c8b55061 100644
--- a/src/Symfony/Bridge/Swiftmailer/composer.json
+++ b/src/Symfony/Bridge/Swiftmailer/composer.json
@@ -26,6 +26,7 @@
         "psr-0": { "Symfony\\Bridge\\Swiftmailer": "" }
     },
     "target-dir": "Symfony/Bridge/Swiftmailer",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Bridge/Twig/composer.json b/src/Symfony/Bridge/Twig/composer.json
index c86cb1bd67..c7f42595a5 100644
--- a/src/Symfony/Bridge/Twig/composer.json
+++ b/src/Symfony/Bridge/Twig/composer.json
@@ -39,6 +39,7 @@
         "psr-0": { "Symfony\\Bridge\\Twig": "" }
     },
     "target-dir": "Symfony/Bridge/Twig",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Bundle/FrameworkBundle/composer.json b/src/Symfony/Bundle/FrameworkBundle/composer.json
index 94a6c47f09..4b48a97b8c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/composer.json
+++ b/src/Symfony/Bundle/FrameworkBundle/composer.json
@@ -40,6 +40,7 @@
         "psr-0": { "Symfony\\Bundle\\FrameworkBundle": "" }
     },
     "target-dir": "Symfony/Bundle/FrameworkBundle",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Bundle/SecurityBundle/composer.json b/src/Symfony/Bundle/SecurityBundle/composer.json
index 3530d67fdf..fb4c79b7b9 100644
--- a/src/Symfony/Bundle/SecurityBundle/composer.json
+++ b/src/Symfony/Bundle/SecurityBundle/composer.json
@@ -23,6 +23,7 @@
         "psr-0": { "Symfony\\Bundle\\SecurityBundle": "" }
     },
     "target-dir": "Symfony/Bundle/SecurityBundle",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Bundle/TwigBundle/composer.json b/src/Symfony/Bundle/TwigBundle/composer.json
index 22538b2d9b..4403206686 100644
--- a/src/Symfony/Bundle/TwigBundle/composer.json
+++ b/src/Symfony/Bundle/TwigBundle/composer.json
@@ -23,6 +23,7 @@
         "psr-0": { "Symfony\\Bundle\\TwigBundle": "" }
     },
     "target-dir": "Symfony/Bundle/TwigBundle",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Bundle/WebProfilerBundle/composer.json b/src/Symfony/Bundle/WebProfilerBundle/composer.json
index f4c5baa8b0..edc5c8d708 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/composer.json
+++ b/src/Symfony/Bundle/WebProfilerBundle/composer.json
@@ -23,6 +23,7 @@
         "psr-0": { "Symfony\\Bundle\\WebProfilerBundle": "" }
     },
     "target-dir": "Symfony/Bundle/WebProfilerBundle",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/BrowserKit/composer.json b/src/Symfony/Component/BrowserKit/composer.json
index c5f208a61c..f40ddfae25 100644
--- a/src/Symfony/Component/BrowserKit/composer.json
+++ b/src/Symfony/Component/BrowserKit/composer.json
@@ -30,6 +30,7 @@
         "psr-0": { "Symfony\\Component\\BrowserKit": "" }
     },
     "target-dir": "Symfony/Component/BrowserKit",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/ClassLoader/composer.json b/src/Symfony/Component/ClassLoader/composer.json
index 6e3b3b8e2e..ccd9ba9bc7 100644
--- a/src/Symfony/Component/ClassLoader/composer.json
+++ b/src/Symfony/Component/ClassLoader/composer.json
@@ -26,6 +26,7 @@
         "psr-0": { "Symfony\\Component\\ClassLoader": "" }
     },
     "target-dir": "Symfony/Component/ClassLoader",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/Config/composer.json b/src/Symfony/Component/Config/composer.json
index 41f08cbfec..7d809454ab 100644
--- a/src/Symfony/Component/Config/composer.json
+++ b/src/Symfony/Component/Config/composer.json
@@ -22,6 +22,7 @@
         "psr-0": { "Symfony\\Component\\Config": "" }
     },
     "target-dir": "Symfony/Component/Config",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/Console/composer.json b/src/Symfony/Component/Console/composer.json
index 6de78afcd9..4488bf6092 100644
--- a/src/Symfony/Component/Console/composer.json
+++ b/src/Symfony/Component/Console/composer.json
@@ -22,6 +22,7 @@
         "psr-0": { "Symfony\\Component\\Console": "" }
     },
     "target-dir": "Symfony/Component/Console",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/CssSelector/composer.json b/src/Symfony/Component/CssSelector/composer.json
index a2a65e610e..285fade6f3 100644
--- a/src/Symfony/Component/CssSelector/composer.json
+++ b/src/Symfony/Component/CssSelector/composer.json
@@ -22,6 +22,7 @@
         "psr-0": { "Symfony\\Component\\CssSelector": "" }
     },
     "target-dir": "Symfony/Component/CssSelector",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/DependencyInjection/composer.json b/src/Symfony/Component/DependencyInjection/composer.json
index 7238bd07ea..81811c39a2 100644
--- a/src/Symfony/Component/DependencyInjection/composer.json
+++ b/src/Symfony/Component/DependencyInjection/composer.json
@@ -30,6 +30,7 @@
         "psr-0": { "Symfony\\Component\\DependencyInjection": "" }
     },
     "target-dir": "Symfony/Component/DependencyInjection",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/DomCrawler/composer.json b/src/Symfony/Component/DomCrawler/composer.json
index cf54e7763e..2dfd795dcd 100644
--- a/src/Symfony/Component/DomCrawler/composer.json
+++ b/src/Symfony/Component/DomCrawler/composer.json
@@ -28,6 +28,7 @@
         "psr-0": { "Symfony\\Component\\DomCrawler": "" }
     },
     "target-dir": "Symfony/Component/DomCrawler",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/EventDispatcher/composer.json b/src/Symfony/Component/EventDispatcher/composer.json
index 9a34819d7f..93abadeaca 100644
--- a/src/Symfony/Component/EventDispatcher/composer.json
+++ b/src/Symfony/Component/EventDispatcher/composer.json
@@ -29,6 +29,7 @@
         "psr-0": { "Symfony\\Component\\EventDispatcher": "" }
     },
     "target-dir": "Symfony/Component/EventDispatcher",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/Filesystem/composer.json b/src/Symfony/Component/Filesystem/composer.json
index 3cf003623f..82325ce29c 100644
--- a/src/Symfony/Component/Filesystem/composer.json
+++ b/src/Symfony/Component/Filesystem/composer.json
@@ -22,6 +22,7 @@
         "psr-0": { "Symfony\\Component\\Filesystem": "" }
     },
     "target-dir": "Symfony/Component/Filesystem",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/Finder/composer.json b/src/Symfony/Component/Finder/composer.json
index 95ea6c646d..aeac80eaf5 100644
--- a/src/Symfony/Component/Finder/composer.json
+++ b/src/Symfony/Component/Finder/composer.json
@@ -22,6 +22,7 @@
         "psr-0": { "Symfony\\Component\\Finder": "" }
     },
     "target-dir": "Symfony/Component/Finder",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/Form/composer.json b/src/Symfony/Component/Form/composer.json
index d02b335fa9..b0446c608c 100644
--- a/src/Symfony/Component/Form/composer.json
+++ b/src/Symfony/Component/Form/composer.json
@@ -33,6 +33,7 @@
         "psr-0": { "Symfony\\Component\\Form": "" }
     },
     "target-dir": "Symfony/Component/Form",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/HttpFoundation/composer.json b/src/Symfony/Component/HttpFoundation/composer.json
index 4e4f90779f..91c23c2487 100644
--- a/src/Symfony/Component/HttpFoundation/composer.json
+++ b/src/Symfony/Component/HttpFoundation/composer.json
@@ -25,6 +25,7 @@
         }
     },
     "target-dir": "Symfony/Component/HttpFoundation",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/HttpKernel/composer.json b/src/Symfony/Component/HttpKernel/composer.json
index e8c693f72b..12ea499dfd 100644
--- a/src/Symfony/Component/HttpKernel/composer.json
+++ b/src/Symfony/Component/HttpKernel/composer.json
@@ -42,6 +42,7 @@
         "psr-0": { "Symfony\\Component\\HttpKernel": "" }
     },
     "target-dir": "Symfony/Component/HttpKernel",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/Locale/composer.json b/src/Symfony/Component/Locale/composer.json
index 0c96cdefcd..ff051d6561 100644
--- a/src/Symfony/Component/Locale/composer.json
+++ b/src/Symfony/Component/Locale/composer.json
@@ -25,6 +25,7 @@
         "psr-0": { "Symfony\\Component\\Locale": "" }
     },
     "target-dir": "Symfony/Component/Locale",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/OptionsResolver/composer.json b/src/Symfony/Component/OptionsResolver/composer.json
index dace3e381c..22a39a23e2 100644
--- a/src/Symfony/Component/OptionsResolver/composer.json
+++ b/src/Symfony/Component/OptionsResolver/composer.json
@@ -22,6 +22,7 @@
         "psr-0": { "Symfony\\Component\\OptionsResolver": "" }
     },
     "target-dir": "Symfony/Component/OptionsResolver",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/Process/composer.json b/src/Symfony/Component/Process/composer.json
index 37fd6b4db9..a9f85f1af8 100644
--- a/src/Symfony/Component/Process/composer.json
+++ b/src/Symfony/Component/Process/composer.json
@@ -22,6 +22,7 @@
         "psr-0": { "Symfony\\Component\\Process": "" }
     },
     "target-dir": "Symfony/Component/Process",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/Routing/composer.json b/src/Symfony/Component/Routing/composer.json
index 44869a3695..09706a6ff3 100644
--- a/src/Symfony/Component/Routing/composer.json
+++ b/src/Symfony/Component/Routing/composer.json
@@ -33,6 +33,7 @@
         "psr-0": { "Symfony\\Component\\Routing": "" }
     },
     "target-dir": "Symfony/Component/Routing",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/Security/composer.json b/src/Symfony/Component/Security/composer.json
index 17b3e155d2..0be7fd2a21 100644
--- a/src/Symfony/Component/Security/composer.json
+++ b/src/Symfony/Component/Security/composer.json
@@ -40,6 +40,7 @@
         "psr-0": { "Symfony\\Component\\Security": "" }
     },
     "target-dir": "Symfony/Component/Security",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/Serializer/composer.json b/src/Symfony/Component/Serializer/composer.json
index 95032ac048..1c8feb3050 100644
--- a/src/Symfony/Component/Serializer/composer.json
+++ b/src/Symfony/Component/Serializer/composer.json
@@ -22,6 +22,7 @@
         "psr-0": { "Symfony\\Component\\Serializer": "" }
     },
     "target-dir": "Symfony/Component/Serializer",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/Templating/composer.json b/src/Symfony/Component/Templating/composer.json
index 2bc88b708c..43b701b824 100644
--- a/src/Symfony/Component/Templating/composer.json
+++ b/src/Symfony/Component/Templating/composer.json
@@ -22,6 +22,7 @@
         "psr-0": { "Symfony\\Component\\Templating": "" }
     },
     "target-dir": "Symfony/Component/Templating",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/Translation/composer.json b/src/Symfony/Component/Translation/composer.json
index 3c20fe3412..6bcf291611 100644
--- a/src/Symfony/Component/Translation/composer.json
+++ b/src/Symfony/Component/Translation/composer.json
@@ -30,6 +30,7 @@
         "psr-0": { "Symfony\\Component\\Translation": "" }
     },
     "target-dir": "Symfony/Component/Translation",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/Validator/composer.json b/src/Symfony/Component/Validator/composer.json
index 10569e366f..5fa51ed776 100644
--- a/src/Symfony/Component/Validator/composer.json
+++ b/src/Symfony/Component/Validator/composer.json
@@ -32,6 +32,7 @@
         "psr-0": { "Symfony\\Component\\Validator": "" }
     },
     "target-dir": "Symfony/Component/Validator",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"
diff --git a/src/Symfony/Component/Yaml/composer.json b/src/Symfony/Component/Yaml/composer.json
index c2894da6a3..88460ce34b 100644
--- a/src/Symfony/Component/Yaml/composer.json
+++ b/src/Symfony/Component/Yaml/composer.json
@@ -22,6 +22,7 @@
         "psr-0": { "Symfony\\Component\\Yaml": "" }
     },
     "target-dir": "Symfony/Component/Yaml",
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "2.1-dev"