diff --git a/Rakefile b/Rakefile
index a5b7a0b4..cd462ed5 100644
--- a/Rakefile
+++ b/Rakefile
@@ -19,3 +19,58 @@ task :doc do
   end
 end
 
+desc "Build coffee-script-source gem"
+task :gem do
+  require 'rubygems'
+  require 'rubygems/package'
+
+  gemspec = Gem::Specification.new do |s|
+    s.name      = 'coffee-script-source'
+    s.version   = '0.9.5'
+    s.date      = '2010-11-21'
+
+    s.homepage    = "http://jashkenas.github.com/coffee-script/"
+    s.summary     = "The CoffeeScript Compiler"
+    s.description = <<-EOS
+      CoffeeScript is a little language that compiles into JavaScript.
+      Underneath all of those embarrassing braces and semicolons,
+      JavaScript has always had a gorgeous object model at its heart.
+      CoffeeScript is an attempt to expose the good parts of JavaScript
+      in a simple way.
+    EOS
+
+    s.files = [
+      'lib/coffee_script/coffee-script.js',
+      'lib/coffee_script/source.rb'
+    ]
+
+    s.authors           = ['Jeremy Ashkenas']
+    s.email             = 'jashkenas@gmail.com'
+    s.rubyforge_project = 'coffee-script-source'
+  end
+
+  file = File.open("coffee-script-source.gem", "w")
+  Gem::Package.open(file, 'w') do |pkg|
+    pkg.metadata = gemspec.to_yaml
+
+    path = "lib/coffee_script/source.rb"
+    contents = <<-ERUBY
+module CoffeeScript
+  module Source
+    def self.bundled_path
+      File.expand_path("../coffee-script.js", __FILE__)
+    end
+  end
+end
+    ERUBY
+    pkg.add_file_simple(path, 0644, contents.size) do |tar_io|
+      tar_io.write(contents)
+    end
+
+    contents = File.read("extras/coffee-script.js")
+    path = "lib/coffee_script/coffee-script.js"
+    pkg.add_file_simple(path, 0644, contents.size) do |tar_io|
+      tar_io.write(contents)
+    end
+  end
+end