diff --git a/rails/map-mash/Gemfile b/rails/map-mash/Gemfile
index 3bc9116..34726d1 100644
--- a/rails/map-mash/Gemfile
+++ b/rails/map-mash/Gemfile
@@ -10,6 +10,7 @@ gem 'mongrel', '1.1.5'
 gem 'nokogiri', '1.4.3.1'
 gem 'rack', '1.2.1'
 gem 'rake', '0.8.7'
+gem 'rdoc'
 gem 'redis-session-store'
 gem 'responds_to_parent', '1.0.20091013'
 gem 'resque', '1.19.0'
diff --git a/rails/map-mash/Gemfile.lock b/rails/map-mash/Gemfile.lock
index 697e915..198d1e7 100644
--- a/rails/map-mash/Gemfile.lock
+++ b/rails/map-mash/Gemfile.lock
@@ -45,6 +45,7 @@ GEM
       guard (>= 0.10.0)
       multi_json (~> 1.0)
     haml (3.1.1)
+    json (1.6.5)
     kgio (2.7.2)
     launchy (0.3.7)
       configuration (>= 0.0.5)
@@ -80,6 +81,8 @@ GEM
     rake (0.8.7)
     rbx-require-relative (0.0.9)
     rcov (0.9.9)
+    rdoc (3.12)
+      json (~> 1.4)
     redis (2.2.2)
     redis-namespace (1.0.3)
       redis (< 3.0.0)
@@ -179,6 +182,7 @@ DEPENDENCIES
   rails (= 2.3.2)
   rake (= 0.8.7)
   rcov (= 0.9.9)
+  rdoc
   redis-session-store
   remarkable_activerecord (= 3.1.13)
   remarkable_rails (= 3.1.13)
diff --git a/rails/map-mash/Rakefile b/rails/map-mash/Rakefile
index 8579689..90542d5 100644
--- a/rails/map-mash/Rakefile
+++ b/rails/map-mash/Rakefile
@@ -1,6 +1,6 @@
 require File.expand_path('config/boot', File.dirname(__FILE__))
 
 require 'rake'
-require 'rake/rdoctask'
+require 'rdoc/task'
 require 'rake/testtask'
 require 'tasks/rails'