diff --git a/Gemfile.lock b/Gemfile.lock
index 8976513..f6c2288 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -16,7 +16,7 @@ GEM
     haml (3.1.7)
     hike (1.2.1)
     multi_json (1.5.0)
-    rack (1.4.1)
+    rack (1.6.13)
     rack-protection (1.2.0)
       rack
     sass (3.2.1)