diff --git a/react-rails.gemspec b/react-rails.gemspec
index bf8262fb..6093f4de 100644
--- a/react-rails.gemspec
+++ b/react-rails.gemspec
@@ -26,7 +26,7 @@ Gem::Specification.new do |s|
 
   s.add_dependency 'execjs'
   s.add_dependency 'rails', '>= 3.1'
-  s.add_dependency 'react-source', '0.12'
+  s.add_dependency 'react-source', '~> 0.12'
   s.add_dependency 'connection_pool'
 
   s.files = Dir[
diff --git a/test/jsxtransform_test.rb b/test/jsxtransform_test.rb
index 998f815b..b89c1a50 100644
--- a/test/jsxtransform_test.rb
+++ b/test/jsxtransform_test.rb
@@ -10,7 +10,7 @@
 (function() {
   var Component;
 
-  Component = React.createClass({displayName: 'Component',
+  Component = React.createClass({displayName: "Component",
     render: function() {
       return React.createElement(ExampleComponent, {videos:this.props.videos} );
     }