diff --git a/rubyzip.gemspec b/rubyzip.gemspec
index 5f2da55..15a5035 100644
--- a/rubyzip.gemspec
+++ b/rubyzip.gemspec
@@ -10,7 +10,8 @@ Gem::Specification.new do |s|
   s.homepage      = 'http://github.com/rubyzip/rubyzip'
   s.platform      = Gem::Platform::RUBY
   s.summary       = 'rubyzip is a ruby module for reading and writing zip files'
-  s.files         = Dir.glob('{samples,lib}/**/*.rb') + %w[README.md TODO Rakefile]
+  s.files         = Dir.glob('{samples,lib}/**/*.rb') +
+                    %w[README.md Changelog.md Rakefile rubyzip.gemspec]
   s.require_paths = ['lib']
   s.license       = 'BSD-2-Clause'