diff --git a/Gemfile b/Gemfile
index 0ef4d190..03820dea 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,6 +11,7 @@ gem "liquid", "~> 2.3.0"
 gem "acts-as-taggable-on", "= 2.1.0"
 # Needed only on RUBY_VERSION = 1.8, ruby 1.9+ compatible interpreters should bring their csv
 gem "fastercsv", "~> 1.5.0", :platforms => [:ruby_18, :jruby, :mingw_18]
+gem "tzinfo", "~> 0.3.31" # Fixes #903. Not required for Rails >= 3.2
 
 group :test do
   gem 'shoulda', '~> 2.10.3'