1 files changed, 6 insertions, 2 deletions
diff --git a/lib/tempfile.gemspec b/lib/tempfile.gemspec
index a3cb11296d..0b362b0a86 100644
--- a/lib/tempfile.gemspec
+++ b/lib/tempfile.gemspec
@@ -22,8 +22,12 @@ Gem::Specification.new do |spec|
 
   # 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('..', __FILE__)) do
-    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+  gemspec = File.basename(__FILE__)
+  spec.files = IO.popen(%w[git ls-files -z], chdir: __dir__, err: IO::NULL, exception: false) do |ls|
+    ls.readlines("\x0", chomp: true).reject do |f|
+      (f == gemspec) ||
+        f.start_with?(*%w[bin/ test/ spec/ features/ .git Gemfile])
+    end
   end
   spec.require_paths = ["lib"]
 end