Rakefile in sinatra_warden-0.1.5 vs Rakefile in sinatra_warden-0.1.5.1

@@ -1,7 +1,5 @@
-require File.join(File.expand_path(File.dirname(__FILE__)), 'vendor', 'gems', 'environment')
-Bundler.require_env
 require 'rake'
 require 'bundler'
 
 begin
   require 'jeweler'
@@ -11,16 +9,14 @@
     gem.description = %Q{basic helpers and authentication methods for using warden with sinatra also providing some hooks into Rack::Flash}
     gem.email = "[e-mail]"
     gem.homepage = "http://github.com/jsmestad/sinatra_warden"
     gem.authors = ["Justin Smestad", "Daniel Neighman"]
 
-    manifest = Bundler::Environment.load(File.dirname(__FILE__) + '/Gemfile')
-    manifest.dependencies.each do |d|
-      next if d.only
-      gem.add_dependency(d.name, d.version)
+    bundle = Bundler::Definition.from_gemfile('Gemfile')
+    bundle.dependencies.each do |dep|
+      next unless dep.groups.include?(:runtime)
+      gem.add_dependency(dep.name, dep.version_requirements.to_s)
     end
-    
-    gem.executables = nil
   end
   Jeweler::GemcutterTasks.new
 rescue LoadError
   puts "Jeweler (or a dependency) not available. Install it with: sudo gem install jeweler"
 end