diff --git a/lib/webrat/core/session.rb b/lib/webrat/core/session.rb
index 2a5ff54..074ded6 100644
--- a/lib/webrat/core/session.rb
+++ b/lib/webrat/core/session.rb
@@ -20,6 +20,10 @@ module Webrat
       MerbSession
     when :rack
       RackSession
+    when :rack_test
+      warn("The :rack_test mode is deprecated. Please use :rack instead")
+      require "webrat/rack"
+      RackSession
     when :sinatra
       warn("The :sinatra mode is deprecated. Please use :rack instead")
       SinatraSession