diff --git a/legality.gemspec b/legality.gemspec
index c47d956..aa04a93 100644
--- a/legality.gemspec
+++ b/legality.gemspec
@@ -17,5 +17,5 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
 
-  spec.add_dependency 'activesupport', '~> 4.1'
+  spec.add_dependency 'activesupport', '>= 4.1'
 end