diff --git a/Gemfile.lock b/Gemfile.lock
index ed10339..edc70a1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,7 +4,7 @@ GEM
     daemons (1.1.9)
     eventmachine (1.0.3)
     newrelic_rpm (3.7.1.182)
-    rack (1.5.2)
+    rack (1.6.13)
     rack-protection (1.5.2)
       rack
     sass (3.2.13)