diff --git a/Gemfile.lock b/Gemfile.lock
index a972054ced6..de14d72e226 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -85,7 +85,7 @@ GEM
       tilt (~> 1.4.1)
     padrino-support (0.12.1)
       activesupport (>= 3.1)
-    rack (1.5.2)
+    rack (1.6.13)
     rack-livereload (0.3.15)
       rack
     rack-test (0.6.2)