diff --git a/Gemfile b/Gemfile
index d979add5b3..7ef6c2e6f2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -13,7 +13,7 @@ gem "pg", ">= 0.8.0"
 gem "mysql", ">= 2.8.1"
 
 # AP
-gem "rack", "1.0.1", :git => "git://github.com/rails/rack.git"
+gem "rack", "1.1.0", :git => "git://github.com/rack/rack.git"
 gem "RedCloth", ">= 4.2.2"
 
 if ENV['CI']
diff --git a/actionpack/actionpack.gemspec b/actionpack/actionpack.gemspec
index 23d478fd44..1294cd4993 100644
--- a/actionpack/actionpack.gemspec
+++ b/actionpack/actionpack.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |s|
 
   s.add_dependency('activesupport', '= 3.0.pre')
   s.add_dependency('activemodel',   '= 3.0.pre')
-  s.add_dependency('rack',          '~> 1.0.1')
+  s.add_dependency('rack',          '~> 1.1.0')
   s.add_dependency('rack-test',     '~> 0.5.0')
   s.add_dependency('rack-mount',    '~> 0.3.2')
   s.add_dependency('erubis',        '~> 2.6.5')