diff --git a/Gemfile b/Gemfile
index 2a0f2ff..551eafe 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 ruby '1.9.3'
 #ruby-gemset=railstutorial_rails_4_0
 
-gem 'rails', '6.0.3.5'
+gem 'rails', '4.0.3'
 
 group :development do
   gem 'sqlite3', '1.3.8'
@@ -13,8 +13,8 @@ gem 'uglifier', '2.1.1'
 gem 'coffee-rails', '4.2.2'
 gem 'jquery-rails', '4.0.1'
 gem 'turbolinks', '1.1.1'
-gem 'jbuilder', '1.0.2'
+gem 'jbuilder', '1.2.0'
 
 group :doc do
-  gem 'sdoc', '0.3.20', require: false
+  gem 'sdoc', '1.0.0', require: false
 end
\ No newline at end of file