diff --git a/lib/api_guides/document.rb b/lib/api_guides/document.rb
index 1654aed..36e5817 100644
--- a/lib/api_guides/document.rb
+++ b/lib/api_guides/document.rb
@@ -1,7 +1,5 @@
 # -*- encoding: utf-8 -*-
 
-require 'active_support/core_ext/object'
-
 module ApiGuides
   # The document class models the raw information in each guide.
   #
@@ -84,9 +82,6 @@ module ApiGuides
   # left-aligned so code and other indentation senstive markdown will be
   # parsed correctly.
   class Document
-    # Use ActiveSupport to memoize parsing methods
-    extend ActiveSupport::Memoizable
-
     attr_accessor :title, :position, :sections
 
     def initialize(attributes = {})
diff --git a/lib/api_guides/generator.rb b/lib/api_guides/generator.rb
index a6a28d9..98c19d6 100644
--- a/lib/api_guides/generator.rb
+++ b/lib/api_guides/generator.rb
@@ -52,8 +52,6 @@ module ApiGuides
   #
   #     generator.generate
   class Generator
-    extend ActiveSupport::Memoizable
-
     attr_accessor :source_path, :site_path, :default, :title, :logo
 
     # You can instatiate a new generator by passing a hash of attributes
@@ -153,9 +151,7 @@ def documents
     # Loop all the document's sections and examples to see all the different
     # languages specified by this document.
     def languages
-      documents.collect(&:sections).flatten.collect(&:examples).flatten.map(&:language).compact.uniq
+      @languages ||= documents.collect(&:sections).flatten.collect(&:examples).flatten.map(&:language).compact.uniq
     end
-    # Store this calculation for later so we don't have to do this retarded loop again.
-    memoize :languages
   end
 end