zertico.gemspec in zertico-0.5.1 vs zertico.gemspec in zertico-0.5.2

@@ -14,9 +14,9 @@
   gem.files         = `git ls-files`.split($/)
   gem.executables   = gem.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
   gem.test_files    = gem.files.grep(%r{^(test|spec|features|gemfiles)/})
   gem.require_paths = ['lib']
 
-  gem.add_runtime_dependency 'rails'
+  gem.add_runtime_dependency 'rails', '>= 3.0.0'
   gem.add_development_dependency 'rspec'
   gem.add_development_dependency 'coveralls'
 end
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