diff --git a/microformats2.gemspec b/microformats2.gemspec
index 3268d54..5c56e00 100644
--- a/microformats2.gemspec
+++ b/microformats2.gemspec
@@ -19,7 +19,7 @@ Gem::Specification.new do |gem|
 
   gem.add_runtime_dependency "nokogiri", "~> 1.5.6"
   gem.add_runtime_dependency "json", "~> 1.7.6"
-  gem.add_runtime_dependency "activesupport", "~> 3.2.12"
+  gem.add_runtime_dependency "activesupport", "~> 3.2.13"
 
   gem.add_development_dependency "rake", "~> 10.0.0"
   gem.add_development_dependency "rspec", "~> 2.11.0"