diff --git a/Gemfile.lock b/Gemfile.lock
index e5e9ad4..fb95c39 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -100,7 +100,7 @@ GEM
       tilt (>= 1.4.1, < 3)
     padrino-support (0.12.9)
       activesupport (>= 3.1)
-    rack (1.6.11)
+    rack (1.6.13)
     rack-livereload (0.3.17)
       rack
     rack-test (1.1.0)