diff --git a/Gemfile b/Gemfile
index 904673e4..8193e835 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 source :rubygems
 
-gem "rails", "2.3.14"
+gem "rails", "2.3.15"
 
 gem "coderay", "~> 0.9.7"
 gem "i18n", "~> 0.4.2"
diff --git a/config/environment.rb b/config/environment.rb
index a85533ac..fc45f797 100644
--- a/config/environment.rb
+++ b/config/environment.rb
@@ -22,7 +22,7 @@
 ENV['RAILS_ENV'] ||= ENV['RACK_ENV'] if ENV['RACK_ENV']
 
 # Specifies gem version of Rails to use when vendor/rails is not present
-RAILS_GEM_VERSION = '2.3.14' unless defined? RAILS_GEM_VERSION
+RAILS_GEM_VERSION = '2.3.15' unless defined? RAILS_GEM_VERSION
 
 if RUBY_VERSION >= '1.9'
   Encoding.default_external = 'UTF-8'