brief.gemspec in brief-1.7.2 vs brief.gemspec in brief-1.7.3

@@ -22,10 +22,10 @@
   spec.add_dependency 'commander', '>= 4.2.1'
   spec.add_dependency 'github-fs'
   spec.add_dependency 'virtus', '>= 1.0.3'
   spec.add_dependency 'inflecto'
   spec.add_dependency 'activemodel'
-  spec.add_dependency 'activesupport'
+  spec.add_dependency 'activesupport', '>= 4.0'
   spec.add_dependency 'redcarpet', '>= 3.2.2'
   spec.add_dependency 'nokogiri'
 
   spec.add_development_dependency "bundler", "~> 1.3"
   spec.add_development_dependency "rake"