diff --git a/uber-sdk.gemspec b/uber-sdk.gemspec
index 87ad9dc..e166bb5 100644
--- a/uber-sdk.gemspec
+++ b/uber-sdk.gemspec
@@ -14,11 +14,8 @@ Gem::Specification.new do |spec|
   spec.homepage      = "https://github.com/chrisenytc/uber-sdk"
   spec.license       = "MIT"
 
-  spec.files = %w(LICENSE.txt README.md Rakefile uber-sdk.gemspec)
-  spec.files += Dir.glob("lib/**/*.rb")
-  spec.files += Dir.glob("test/**/*")
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
-  spec.test_files    = Dir.glob("test/**/*")
+  spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.start_with?(".") || f =~ %r(^(spec|bin)/) }
   spec.require_paths = ["lib"]
   spec.required_rubygems_version = ">= 1.3.5"