diff --git a/Gemfile.lock b/Gemfile.lock
index ffe2cc5..0f510fc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -106,7 +106,7 @@ GEM
       tilt (~> 1.4.1)
     padrino-support (0.12.8.1)
       activesupport (>= 3.1)
-    rack (1.6.8)
+    rack (1.6.12)
     rack-livereload (0.3.15)
       rack
     rack-test (0.6.3)