diff --git a/database_cleaner-core.gemspec b/database_cleaner-core.gemspec
index 3136e634..afc668a2 100644
--- a/database_cleaner-core.gemspec
+++ b/database_cleaner-core.gemspec
@@ -11,11 +11,7 @@ Gem::Specification.new do |spec|
   spec.homepage    = "https://github.com/DatabaseCleaner/database_cleaner"
   spec.license     = "MIT"
 
-  spec.files         = `git ls-files -z`.split("\x0").reject do |f|
-    f.match(%r{^(test|spec|features|examples)/})
-  end - ["lib/database_cleaner.rb"] # should only exist in database_cleaner gem
-  spec.bindir        = "exe"
-  spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
+  spec.files         = `git ls-files -z lib History.rdoc LICENSE README.markdown`.split("\x0")- ["lib/database_cleaner.rb"] # should only exist in database_cleaner gem
   spec.require_paths = ["lib"]
 
   spec.add_development_dependency "rake"