diff --git a/Gemfile.lock b/Gemfile.lock
index 7f1e2e1..d3ff050 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,7 @@ GEM
     haml (3.0.25)
     iconv (0.1)
     json (1.5.1)
-    rack (1.2.1)
+    rack (1.6.13)
     rake (0.8.7)
     redis (2.2.0)
     sass (3.1.7)