diff --git a/RAILS_VERSION b/RAILS_VERSION
index ee00187eb3410c984aa9a6cf7c8ebdc45241ee60..59e61f95df9670cb933bcd6551601b3602460008 100644
--- a/RAILS_VERSION
+++ b/RAILS_VERSION
@@ -1 +1 @@
-4.1.0.beta2
+4.2.0.alpha
diff --git a/actionmailer/lib/action_mailer/version.rb b/actionmailer/lib/action_mailer/version.rb
index 60732c593b1559cafcf0064c32c1221d57e77ee9..7b2cf305c2f7d50d2d790a1668fa9009b118dc08 100644
--- a/actionmailer/lib/action_mailer/version.rb
+++ b/actionmailer/lib/action_mailer/version.rb
@@ -1,7 +1,7 @@
 module ActionMailer
   # Returns the version of the currently loaded ActionMailer as a Gem::Version
   def self.version
-    Gem::Version.new "4.1.0.beta2"
+    Gem::Version.new "4.2.0.alpha"
   end
 
   module VERSION #:nodoc:
diff --git a/actionpack/lib/action_pack/version.rb b/actionpack/lib/action_pack/version.rb
index 8da3069c8bfc8f2af9d430f83d8c7b9d08fca3b2..75fb0d9532499611b009ccb6798bfe5c8b4221df 100644
--- a/actionpack/lib/action_pack/version.rb
+++ b/actionpack/lib/action_pack/version.rb
@@ -1,7 +1,7 @@
 module ActionPack
   # Returns the version of the currently loaded ActionPack as a Gem::Version
   def self.version
-    Gem::Version.new "4.1.0.beta2"
+    Gem::Version.new "4.2.0.alpha"
   end
 
   module VERSION #:nodoc:
diff --git a/actionview/lib/action_view/version.rb b/actionview/lib/action_view/version.rb
index 3d5d6c9be1e51321fe85041431b908c1eb60b232..b3ff4157752f3cb3bbe668ca2159e104e87b7eb5 100644
--- a/actionview/lib/action_view/version.rb
+++ b/actionview/lib/action_view/version.rb
@@ -1,7 +1,7 @@
 module ActionView
   # Returns the version of the currently loaded ActionView as a Gem::Version
   def self.version
-    Gem::Version.new "4.1.0.beta2"
+    Gem::Version.new "4.2.0.alpha"
   end
 
   module VERSION #:nodoc:
diff --git a/activemodel/lib/active_model/version.rb b/activemodel/lib/active_model/version.rb
index f7c9534ffbce35765390fb6c98b0956ad1b0dd0b..5c9d2bc6bce36374600e6f0f33653a86bfdbebf8 100644
--- a/activemodel/lib/active_model/version.rb
+++ b/activemodel/lib/active_model/version.rb
@@ -1,7 +1,7 @@
 module ActiveModel
   # Returns the version of the currently loaded ActiveModel as a Gem::Version
   def self.version
-    Gem::Version.new "4.1.0.beta2"
+    Gem::Version.new "4.2.0.alpha"
   end
 
   module VERSION #:nodoc:
diff --git a/activerecord/lib/active_record/version.rb b/activerecord/lib/active_record/version.rb
index 7795561e5163f5f9242f5b65aa44365d4098feff..5eb7f7e205b4d2b9b98c0dac830605f4be067bcd 100644
--- a/activerecord/lib/active_record/version.rb
+++ b/activerecord/lib/active_record/version.rb
@@ -1,7 +1,7 @@
 module ActiveRecord
   # Returns the version of the currently loaded ActiveRecord as a Gem::Version
   def self.version
-    Gem::Version.new "4.1.0.beta2"
+    Gem::Version.new "4.2.0.alpha"
   end
 
   module VERSION #:nodoc:
diff --git a/activesupport/lib/active_support/version.rb b/activesupport/lib/active_support/version.rb
index b9d6417b07cd6ad991cb48dd8e1f5525b5121ccb..38f726ea34661a99cb8c1e6c7d970a7d37914859 100644
--- a/activesupport/lib/active_support/version.rb
+++ b/activesupport/lib/active_support/version.rb
@@ -1,7 +1,7 @@
 module ActiveSupport
   # Returns the version of the currently loaded ActiveSupport as a Gem::Version
   def self.version
-    Gem::Version.new "4.1.0.beta2"
+    Gem::Version.new "4.2.0.alpha"
   end
 
   module VERSION #:nodoc:
diff --git a/railties/lib/rails/version.rb b/railties/lib/rails/version.rb
index e4fd798d18c4a27c495f4cc5739d27c25e16f343..79313c936aca9374050eedc699bc7ee8f6d15abb 100644
--- a/railties/lib/rails/version.rb
+++ b/railties/lib/rails/version.rb
@@ -1,9 +1,9 @@
 module Rails
   module VERSION
     MAJOR = 4
-    MINOR = 1
+    MINOR = 2
     TINY  = 0
-    PRE   = "beta2"
+    PRE   = "alpha"
 
     STRING = [MAJOR, MINOR, TINY, PRE].compact.join(".")
   end
diff --git a/version.rb b/version.rb
index e4fd798d18c4a27c495f4cc5739d27c25e16f343..79313c936aca9374050eedc699bc7ee8f6d15abb 100644
--- a/version.rb
+++ b/version.rb
@@ -1,9 +1,9 @@
 module Rails
   module VERSION
     MAJOR = 4
-    MINOR = 1
+    MINOR = 2
     TINY  = 0
-    PRE   = "beta2"
+    PRE   = "alpha"
 
     STRING = [MAJOR, MINOR, TINY, PRE].compact.join(".")
   end