diff --git a/Gemfile b/Gemfile
index 94ad6dcd6..d5ae4ff1d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 source :rubygems
 
-gem "rails", "2.3.14"
+gem "rails", "2.3.15"
 gem "i18n", "~> 0.4.2"
 gem "coderay", "~> 1.0.6"
 gem "fastercsv", "~> 1.5.0", :platforms => [:mri_18, :mingw_18, :jruby]
diff --git a/doc/CHANGELOG b/doc/CHANGELOG
index e1d60641e..656ab50a4 100644
--- a/doc/CHANGELOG
+++ b/doc/CHANGELOG
@@ -6,6 +6,7 @@ http://www.redmine.org/
 
 == TBD v1.4.6
 
+* Upgrade to Rails 2.3.15
 * Defect #12409: Git: changesets aren't read after clear_changesets call
 * Patch #12605: Norwegian translation for 1.4-stable update
 * Patch #12614: Dutch translation