diff --git a/Gemfile.lock b/Gemfile.lock
index 140aae3..c46d93b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,7 +2,7 @@ GEM
   remote: http://rubygems.org/
   specs:
     oauth (0.4.5)
-    rack (1.6.11)
+    rack (1.6.13)
     rack-protection (1.5.5)
       rack
     sinatra (1.3.1)