diff --git a/omniauth-samedi.gemspec b/omniauth-samedi.gemspec
index 4a482ef..8de103c 100644
--- a/omniauth-samedi.gemspec
+++ b/omniauth-samedi.gemspec
@@ -26,7 +26,7 @@ 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(__dir__)) do
-    `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z`.split("\x0").select { |f| f.match(%r{^(lib/|LICENSE|README|omniauth-samedi\.gemspec)}) }
   end
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }