diff --git a/Gemfile b/Gemfile
index 50b717c42..6216b83be 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ source "https://rubygems.org/"
 # PRODUCTION: bundle install --deployment --without dev
 
 gem 'addressable', '2.2.6'
-gem 'rack', '1.4.5'
+gem 'rack', '2.1.4.1'
 gem 'yajl-ruby', '1.1.0'
 gem 'thin', '1.5.0'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 503963743..6982cd9fb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -44,7 +44,7 @@ GEM
       addressable (>= 2.2.6)
       rack (>= 1.2.1)
     polyglot (0.3.5)
-    rack (1.4.5)
+    rack (2.1.4.1)
     redis (2.2.2)
     redis-dump (0.3.2)
       drydock (>= 0.6.9)
@@ -99,7 +99,7 @@ DEPENDENCIES
   mail (= 2.5.4)
   mustache (= 0.99.3)
   otto (= 0.4.1)
-  rack (= 1.4.5)
+  rack (= 2.1.4.1)
   redis (= 2.2.2)
   redis-dump (= 0.3.2)
   rudy (= 0.9.8.020)