diff --git a/Gemfile.lock b/Gemfile.lock
index 54d8363..6ac119e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -41,7 +41,7 @@ GEM
       coderay (~> 1.0.5)
       method_source (~> 0.8)
       slop (~> 3.4)
-    rack (1.5.2)
+    rack (1.6.13)
     rack-protection (1.5.0)
       rack
     rake (10.0.4)