rails-reveal-js.gemspec in rails-reveal-js-2.6.1.2 vs rails-reveal-js.gemspec in rails-reveal-js-3.1.0

@@ -17,9 +17,9 @@
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
 
   spec.add_development_dependency "bundler", "~> 1.5"
-  spec.add_development_dependency "rake"
+  spec.add_development_dependency "rake", "~> 11.0"
 
-  spec.add_dependency "railties", "~> 4.0"
+  spec.add_dependency "railties", "~> 4", "< 5.1"
 end