diff --git a/Gemfile.lock b/Gemfile.lock
index e3931cd..c49a097 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -84,7 +84,7 @@ GEM
       tilt (~> 1.4.1)
     padrino-support (0.12.5)
       activesupport (>= 3.1)
-    rack (1.6.0)
+    rack (1.6.13)
     rack-test (0.6.3)
       rack (>= 1.0)
     rake (10.4.2)