diff --git a/Gemfile.lock b/Gemfile.lock
index 1618b26..3fc13e3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -69,7 +69,7 @@ GEM
       coderay (~> 1.0.5)
       method_source (~> 0.8)
       slop (~> 3.4)
-    rack (1.5.2)
+    rack (1.6.11)
     rake (10.1.0)
     rdoc (4.0.1)
       json (~> 1.4)