diff --git a/hooks/ruby/configuring-your-server/Gemfile.lock b/hooks/ruby/configuring-your-server/Gemfile.lock
index 569009d15..30a0cdef7 100644
--- a/hooks/ruby/configuring-your-server/Gemfile.lock
+++ b/hooks/ruby/configuring-your-server/Gemfile.lock
@@ -2,7 +2,7 @@ GEM
   remote: http://rubygems.org/
   specs:
     json (1.7.7)
-    rack (1.5.2)
+    rack (1.6.13)
     rack-protection (1.5.2)
       rack
     sinatra (1.3.6)