diff --git a/Gemfile b/Gemfile
index 8db7d813f8e5e..4b9305b530255 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,13 +1,13 @@
 source "http://rubygems.org"
 
-gem "rails", "3.2.5"
+gem "rails", "4.0.0"
 
 # Supported DBs
 gem "sqlite3"
 gem "mysql2"
 
 # Auth
-gem "devise", "~> 2.1.0"
+gem "devise", "~> 3.0.0"
 
 # GITLAB patched libs
 gem "grit",          :git => "https://github.com/gitlabhq/grit.git",            :ref => "7f35cb98ff17d534a07e3ce6ec3d580f67402837"
@@ -21,7 +21,7 @@ gem "linguist", "~> 1.0.0", :git => "https://github.com/gitlabhq/linguist.git"
 gem "grape", "~> 0.2.1"
 gem "stamp"
 gem "kaminari"
-gem "haml-rails"
+gem "haml-rails", ">= 0.3.5"
 gem "carrierwave"
 gem "six"
 gem "ffaker"
@@ -31,7 +31,7 @@ gem "thin"
 gem "unicorn"
 gem "git"
 gem "acts_as_list"
-gem "acts-as-taggable-on", "2.3.1"
+gem "acts-as-taggable-on", "2.4.1"
 gem "drapper"
 gem "resque", "~> 1.20.0"
 gem "httparty"
@@ -43,12 +43,12 @@ gem 'tabs_on_rails'
 gem 'settingslogic'
 
 group :assets do
-  gem "sass-rails",   "3.2.5"
-  gem "coffee-rails", "3.2.2"
+  gem "sass-rails", "4.0.0"
+  gem "coffee-rails", "4.0.0"
   gem "uglifier",     "1.0.3"
   gem "therubyracer"
 
-  gem 'chosen-rails'
+  gem 'chosen-rails', '>= 0.9.11.1'
   gem "jquery-rails",     "2.0.2"
   gem "jquery-ui-rails",  "0.5.0"
   gem "modernizr",        "2.5.3"