diff --git a/Gemfile b/Gemfile
index c4f79a8..1e28175 100644
--- a/Gemfile
+++ b/Gemfile
@@ -28,6 +28,7 @@ group :production do
 end
 
 group :test do
+  gem 'test-unit',              '~> 1.2.3'
   gem 'rspec',                  '~> 2.10.0'
   gem 'rspec-rails',            '~> 2.10.1'
   gem 'mocha',                  '~> 1.1.0', :require => false
diff --git a/lib/tasks/plugins_tests.rake b/lib/tasks/plugins_tests.rake
index 69134fe..9ac10d1 100644
--- a/lib/tasks/plugins_tests.rake
+++ b/lib/tasks/plugins_tests.rake
@@ -104,7 +104,7 @@ def run_test(name, files)
 end
 
 def run_testrb(files)
-  sh 'testrb', '-Itest', *files
+  sh 'testrb', '-I.:test', *files
 end
 
 def run_cucumber(profile, files)
--
libgit2 0.21.2