diff --git a/actionpack/Gemfile b/actionpack/Gemfile
index b1579b427b8..7d99e0601b9 100644
--- a/actionpack/Gemfile
+++ b/actionpack/Gemfile
@@ -1,7 +1,7 @@
 rails_root = Pathname.new(File.dirname(__FILE__)).join("..")
 
 gem "rack", "~> 1.0.0"
-gem "rack-test", "~> 0.4.2"
+gem "rack-test", "~> 0.5.0"
 gem "activesupport", "3.0.pre", :vendored_at => rails_root.join("activesupport")
 gem "activemodel", "3.0.pre", :vendored_at => rails_root.join("activemodel")
 
diff --git a/actionpack/Rakefile b/actionpack/Rakefile
index cc7b4b0043f..d764c35732f 100644
--- a/actionpack/Rakefile
+++ b/actionpack/Rakefile
@@ -98,7 +98,7 @@ spec = Gem::Specification.new do |s|
   s.add_dependency('activesupport', '= 3.0.pre' + PKG_BUILD)
   s.add_dependency('activemodel',   '= 3.0.pre' + PKG_BUILD)
   s.add_dependency('rack', '~> 1.0.0')
-  s.add_dependency('rack-test', '~> 0.4.2')
+  s.add_dependency('rack-test', '~> 0.5.0')
 
   s.require_path = 'lib'
   s.autorequire = 'action_controller'
diff --git a/actionpack/actionpack.gemspec b/actionpack/actionpack.gemspec
index b91993a12e8..2119f1649dc 100644
--- a/actionpack/actionpack.gemspec
+++ b/actionpack/actionpack.gemspec
@@ -26,17 +26,17 @@ Gem::Specification.new do |s|
       s.add_runtime_dependency(%q<activesupport>, ["= 3.0.pre"])
       s.add_runtime_dependency(%q<activemodel>, ["= 3.0.pre"])
       s.add_runtime_dependency(%q<rack>, ["~> 1.0.0"])
-      s.add_runtime_dependency(%q<rack-test>, ["~> 0.4.2"])
+      s.add_runtime_dependency(%q<rack-test>, ["~> 0.5.0"])
     else
       s.add_dependency(%q<activesupport>, ["= 3.0.pre"])
       s.add_dependency(%q<activemodel>, ["= 3.0.pre"])
       s.add_dependency(%q<rack>, ["~> 1.0.0"])
-      s.add_dependency(%q<rack-test>, ["~> 0.4.2"])
+      s.add_dependency(%q<rack-test>, ["~> 0.5.0"])
     end
   else
     s.add_dependency(%q<activesupport>, ["= 3.0.pre"])
     s.add_dependency(%q<activemodel>, ["= 3.0.pre"])
     s.add_dependency(%q<rack>, ["~> 1.0.0"])
-    s.add_dependency(%q<rack-test>, ["~> 0.4.2"])
+    s.add_dependency(%q<rack-test>, ["~> 0.5.0"])
   end
 end