rake-delphi.gemspec in rake-delphi-0.0.29 vs rake-delphi.gemspec in rake-delphi-0.0.30

@@ -26,12 +26,17 @@
   end
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
 
-  spec.add_development_dependency "bundler", "~> 1.3"
+  spec.add_runtime_dependency "bundler", "~> 1.3"
+  spec.add_runtime_dependency "rake", "~> 10.0.4"
+  spec.add_runtime_dependency "xml-simple"
+  spec.add_runtime_dependency "inifile"
+  # Ruby 2.2 have no `test-unit` gem in stdlib
+  if (Gem::Version.new(RUBY_VERSION) <=> Gem::Version.new('2.2')) >= 0
+    spec.add_development_dependency "test-unit"
+  end
   spec.add_development_dependency "minitest", "~> 4.3"
-  spec.add_development_dependency "rake", "~> 10.0.4"
-  spec.add_development_dependency "xml-simple"
   spec.add_development_dependency "rubyzip", "~> 0.9.9"
   spec.add_development_dependency "apktools"
 end