diff --git a/Gemfile.lock b/Gemfile.lock
index f93ed6e9c..2118f568d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -149,7 +149,7 @@ GEM
     padrino-support (0.12.9)
       activesupport (>= 3.1)
     public_suffix (3.0.3)
-    rack (1.6.10)
+    rack (1.6.12)
     rack-livereload (0.3.17)
       rack
     rack-test (0.6.3)