--- a/debug.gemspec
+++ b/debug.gemspec
@@ -18,7 +18 @@
-  # Specify which files should be added to the gem when it is released.
-  # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
-  spec.files = Dir.chdir(File.expand_path(__dir__)) do
-    `git ls-files -z`.split("\x0").reject do |f|
-      (f == __FILE__) || f.match(%r{\A(?:(?:bin|test|spec|features)/|\.(?:git|travis|circleci)|appveyor)})
-    end
-  end
+  spec.files         = Dir["exe/*", "ext/**/*", "lib/**/*.rb"]