diff --git a/Gemfile.lock b/Gemfile.lock
index d862b1e..510c140 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,7 +12,7 @@ GEM
     eventmachine (0.12.10)
     gemcutter (0.7.0)
     json_pure (1.6.1)
-    rack (1.3.3)
+    rack (2.2.3)
     rake (0.9.2)
     rdoc (3.9.4)
     rubyforge (2.0.4)