diff --git a/test/test_helper.rb b/test/test_helper.rb
index 9389762..e47391c 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -7,7 +7,7 @@
 require 'minitest/autorun'
 require 'minitest/pride'
 require 'fakeredis'
-require 'mocha'
+require 'mocha/mini_test'
 require 'timecop'
 
 require 'von'
\ No newline at end of file
diff --git a/von.gemspec b/von.gemspec
index b14a496..edb2818 100644
--- a/von.gemspec
+++ b/von.gemspec
@@ -20,7 +20,7 @@ Gem::Specification.new do |gem|
   gem.required_ruby_version = '>= 1.9.2'
 
   gem.add_dependency 'redis', '~> 3.0.2'
-  gem.add_dependency 'activesupport', '~> 3.2.11'
+  gem.add_dependency 'activesupport', '~> 4.1.0'
 
   gem.add_development_dependency 'rake', '>= 10.0.3'
   gem.add_development_dependency 'minitest', '>= 3.0.0'