Rakefile in rcelery-1.0.0 vs Rakefile in rcelery-1.0.1

@@ -2,15 +2,12 @@
 require 'bundler'
 Bundler.setup
 
 require 'rake'
 require 'rspec/core/rake_task'
-require 'rake/gempackagetask'
+require 'rubygems/package_task'
 
-def gemspec
-  eval(File.new('rcelery.gemspec').read)
-end
-Rake::GemPackageTask.new(gemspec).define
+Gem::PackageTask.new(Gem::Specification.load('rcelery.gemspec')).define
 
 desc 'Run ruby worker integration specs'
 RSpec::Core::RakeTask.new('spec:integration:ruby_worker') do |t|
   t.pattern = 'spec/integration/ruby_worker_spec.rb'
   t.rspec_opts = ["--color"]