charger.gemspec in charger-0.1.0 vs charger.gemspec in charger-0.1.1

@@ -17,9 +17,10 @@
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
   gem.require_paths = ["lib"]
 
   gem.add_runtime_dependency('virtus')
   gem.add_runtime_dependency('activesupport')
+  gem.add_runtime_dependency('activemodel')
   gem.add_runtime_dependency('multi_json')
   gem.add_runtime_dependency('rest-client')
 
   gem.add_development_dependency('rake')
   gem.add_development_dependency('rspec')