--- a/prime.gemspec
+++ b/prime.gemspec
@@ -19 +19 @@
-  spec.files         = [".gitignore", "Gemfile", "LICENSE.txt", "README.md", "Rakefile", "bin/console", "bin/setup", "lib/prime.rb", "prime.gemspec"]
+  spec.files         = Dir["lib/**/*.rb"]