diff --git a/Gemfile.lock b/Gemfile.lock
index 6f89d21..297a541 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,7 +12,7 @@ GEM
       selenium-webdriver (>= 0.1.3)
     jasmine-core (1.1.0)
     multi_json (1.1.0)
-    rack (1.4.1)
+    rack (2.2.3)
     rake (0.9.2.2)
     rspec (2.9.0)
       rspec-core (~> 2.9.0)