diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..a2eee99
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,10 @@
+source "http://rubygems.org/"
+
+gem "bundler", "~> 1.1.rc.7"
+gem "rake", ">= 0.9.2.2"
+
+gem "rspec"
+gem "require_all"
+gem "constructor"
+gem "diy"
+gem "rr"