diff --git a/Gemfile.lock b/Gemfile.lock
index d247939d1..445780f1f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -307,7 +307,7 @@ GEM
       activesupport (>= 3.0.0)
     pygments.rb (1.1.2)
       multi_json (>= 1.0.0)
-    rack (1.6.11)
+    rack (1.6.13)
     rack-contrib (1.4.0)
       git-version-bump (~> 0.15)
       rack (~> 1.4)