diff --git a/CHANGES.md b/CHANGES.md
index 6d395e4..8793146 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,7 @@
+## v0.6.0 2015-07-06 22:36:25+0300
+
+* Updated version to 0.6.0 for using Typescript source 1.4.1.3
+
 ## v0.5.0 2015-03-25 10:46:29+0900
 
 * Expire root TS cache in response to change in referenced `.ts` files (#24)
diff --git a/lib/typescript/rails/compiler.rb b/lib/typescript/rails/compiler.rb
index a810777..9f7aa74 100644
--- a/lib/typescript/rails/compiler.rb
+++ b/lib/typescript/rails/compiler.rb
@@ -17,15 +17,13 @@ def replace_relative_references(ts_path, source)
 
       # Why don't we just use gsub? Because it display odd behavior with File.join on Ruby 2.0
       # So we go the long way around.
-      output = (source.each_line.map do |l|
+      (source.each_line.map do |l|
         if l.starts_with?('///') && !(m = %r!^///\s*<reference\s+path=(?:"([^"]+)"|'([^']+)')\s*/>\s*!.match(l)).nil?
           matched_path = m.captures.compact[0]
           l = l.sub(matched_path, File.join(escaped_dir, matched_path))
         end
         next l
       end).join
-
-      output
     end
 
     # Get all references
@@ -64,8 +62,5 @@ def compile(ts_path, source, context=nil, *options)
 
   end
 
-  self.default_options = [
-      '--target', 'ES5',
-      '--noImplicitAny'
-  ]
+  self.default_options = %w(--target ES5 --noImplicitAny)
 end
diff --git a/lib/typescript/rails/version.rb b/lib/typescript/rails/version.rb
index 61cfadb..afbde79 100644
--- a/lib/typescript/rails/version.rb
+++ b/lib/typescript/rails/version.rb
@@ -1,5 +1,5 @@
 module Typescript
   module Rails
-    VERSION = '0.5.0'
+    VERSION = '0.6.0'
   end
 end
diff --git a/test/assets_test.rb b/test/assets_test.rb
index 4c6f346..951b803 100644
--- a/test/assets_test.rb
+++ b/test/assets_test.rb
@@ -1,4 +1,4 @@
-require 'test_helper'
+require File.join(File.dirname(__FILE__), 'test_helper.rb')
 require 'typescript-rails'
 
 require "action_controller/railtie"
@@ -35,14 +35,14 @@ def assets
     @app.assets
   end
 
-  test "typescript.js is included in Sprockets environment" do
-    assert { assets["typescript"].pathname.to_s.end_with?('/lib/assets/javascripts/typescript.js.erb') }
-    assert { assets["typescript"].body.include?('var TypeScript') }
+  test 'typescript.js is included in Sprockets environment' do
+    assert { assets["typescript"].filename.to_s.end_with?('/lib/assets/javascripts/typescript.js.erb') }
+    assert { assets["typescript"].source.include?('var ts;') }
   end
 
-  test "assets .js.ts is compiled from TypeScript to JavaScript" do
+  test 'assets .js.ts is compiled from TypeScript to JavaScript' do
     assert { assets["javascripts/hello"].present? }
-    assert { assets["javascripts/hello"].send(:dependency_paths).map(&:pathname).map(&:to_s).include? File.expand_path("#{File.dirname(__FILE__)}/fixtures/assets/javascripts/included.ts") }
-    assert { assets["javascripts/hello"].body.include?('var s = "Hello, world!";') }
+    assert { assets["javascripts/hello"].source.include?('var log_to_console = function (x) {') }
+    assert { assets["javascripts/hello"].source.include?('var s = "Hello, world!";') }
   end
 end
\ No newline at end of file
diff --git a/typescript-rails.gemspec b/typescript-rails.gemspec
index 7b00c24..ba4994a 100644
--- a/typescript-rails.gemspec
+++ b/typescript-rails.gemspec
@@ -5,23 +5,23 @@ $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require 'typescript/rails/version'
 
 Gem::Specification.new do |gem|
-  gem.name          = "typescript-rails"
+  gem.name          = 'typescript-rails'
   gem.version       = Typescript::Rails::VERSION
   gem.platform      = Gem::Platform::RUBY
-  gem.authors       = ["FUJI, Goro", "Klaus Zanders"]
-  gem.email         = ["gfuji@cpan.org", "klaus.zanders@gmail.com"]
+  gem.authors       = ['FUJI, Goro', 'Klaus Zanders']
+  gem.email         = %w(gfuji@cpan.org klaus.zanders@gmail.com)
   gem.description   = %q{Adds Typescript to the Rails Asset pipeline}
   gem.summary       = %q{Adds Typescript to the Rails Asset pipeline}
-  gem.homepage      = "https://github.com/typescript-ruby/typescript-rails"
+  gem.homepage      = 'https://github.com/typescript-ruby/typescript-rails'
 
-  gem.add_runtime_dependency 'typescript-node', '>= 1.1.0'
+  gem.add_runtime_dependency 'typescript-node', '>= 1.4.1'
   gem.add_runtime_dependency 'tilt'
   gem.add_runtime_dependency 'railties'
 
   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)/})
-  gem.require_paths = ["lib"]
+  gem.require_paths = ['lib']
 
-  gem.required_ruby_version = ">= 2.0.0"
+  gem.required_ruby_version = '>= 2.0.0'
 end