diff --git a/lib/gemfile_generator.rb b/lib/gemfile_generator.rb
index b41ccb9..b2a2b20 100644
--- a/lib/gemfile_generator.rb
+++ b/lib/gemfile_generator.rb
@@ -62,7 +62,7 @@ module Rails
 # This preamble is the current preamble for Rails 3 apps; edit as needed.
 source 'http://rubygems.org'
 
-gem 'rails', '3.0.3'
+gem 'rails', '3.0.6'
 
 STR
         preamble + generate_upgraded_code
diff --git a/test/gemfile_generator_test.rb b/test/gemfile_generator_test.rb
index 4de6725..afa8e83 100644
--- a/test/gemfile_generator_test.rb
+++ b/test/gemfile_generator_test.rb
@@ -24,7 +24,7 @@ class GemfileGeneratorTest < ActiveSupport::TestCase
 # This preamble is the current preamble for Rails 3 apps; edit as needed.
 source 'http://rubygems.org'
 
-gem 'rails', '3.0.3'
+gem 'rails', '3.0.6'
 
 STR