diff --git a/.travis.yml b/.travis.yml
index 3734c00..641e9b8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,4 +3,4 @@ rvm:
   - 1.8.7
   - 1.9.2
   - 1.9.3
-script: rake test:ruby
+script: bundle exec rake test:ruby
diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..7fcd75c
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,6 @@
+source :rubygems
+gem 'rake'
+gem 'shoulda'
+gem 'mocha'
+
+gemspec