diff --git a/Gemfile b/Gemfile
index 219755b..74972e1 100755
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 
 #don't upgrade
 gem 'rails', '3.2.11'
-gem 'rack', '1.4.3'
+gem 'rack', '1.4.0'
 
 # Bundle edge Rails instead:
 # gem 'rails', :git => 'git://github.com/rails/rails.git'
diff --git a/Gemfile.lock b/Gemfile.lock
index 4c937ea..0d34071 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -167,7 +167,7 @@ GEM
       coderay (~> 1.0)
       method_source (~> 0.8)
       slop (~> 3.4)
-    rack (1.4.3)
+    rack (1.4.0)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-livereload (0.3.15)
@@ -293,7 +293,7 @@ DEPENDENCIES
   poltergeist
   powder
   pry
-  rack (= 1.4.3)
+  rack (= 1.4.0)
   rack-livereload
   rails (= 3.2.11)
   rb-fsevent