diff --git a/delayed_job_active_record.gemspec b/delayed_job_active_record.gemspec
index ba0d2dfd..3da19f1b 100644
--- a/delayed_job_active_record.gemspec
+++ b/delayed_job_active_record.gemspec
@@ -6,14 +6,11 @@ Gem::Specification.new do |spec|
   spec.authors        = ["Brian Ryckbost", "Matt Griffin", "Erik Michaels-Ober"]
   spec.description    = "ActiveRecord backend for Delayed::Job, originally authored by Tobias Lütke"
   spec.email          = ["bryckbost@gmail.com", "matt@griffinonline.org", "sferik@gmail.com"]
-  spec.files          = %w(CONTRIBUTING.md LICENSE.md README.md Rakefile delayed_job_active_record.gemspec)
-  spec.files         += Dir.glob("lib/**/*.rb")
-  spec.files         += Dir.glob("spec/**/*")
+  spec.files          = %w(CONTRIBUTING.md LICENSE.md README.md delayed_job_active_record.gemspec) + Dir.glob("lib/**/*.rb")
   spec.homepage       = "http://github.com/collectiveidea/delayed_job_active_record"
   spec.licenses       = ["MIT"]
   spec.name           = "delayed_job_active_record"
   spec.require_paths  = ["lib"]
   spec.summary        = "ActiveRecord backend for DelayedJob"
-  spec.test_files     = Dir.glob("spec/**/*")
   spec.version        = "4.0.2"
 end