diff --git a/.gemspec b/.gemspec
index 0314cc1..5a41806 100644
--- a/.gemspec
+++ b/.gemspec
@@ -18,7 +18,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'mocha', '~> 0.12.1'
   s.add_development_dependency 'mocha-on-bacon', '~> 0.2.1'
   s.add_development_dependency 'bacon-bits'
-  s.files = Dir.glob(%w[{lib,test}/**/*.rb bin/* [A-Z]*.{txt,rdoc}]) + %w{Rakefile .gemspec .travis.yml}
+  s.files = Dir.glob(%w[{lib,test}/**/*.rb bin/* [A-Z]*.{txt,rdoc,md}]) + %w{Rakefile .gemspec .travis.yml}
   if ENV['GEM_PLATFORM'] != 'java'
     s.files += Dir.glob("ext/**/*.{rb,c}")
     s.extensions = ["ext/readline_line_buffer/extconf.rb"]