diff --git a/Gemfile b/Gemfile
index 27cb09f..788b9b1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,6 +4,7 @@ gem 'mime-types'
 gem 'nanoc'
 gem 'bitly'
 gem 'haml'
+gem 'sass'
 gem 'rdiscount'
 gem 'rubypants'
 gem 'nokogiri'
diff --git a/Gemfile.lock b/Gemfile.lock
index b2c1b34..b75b919 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -53,6 +53,7 @@ GEM
     rb-fsevent (0.9.2)
     rdiscount (1.6.8)
     rubypants (0.2.0)
+    sass (3.2.1)
     slop (3.3.3)
     thor (0.16.0)
 
@@ -72,3 +73,4 @@ DEPENDENCIES
   rb-fsevent
   rdiscount
   rubypants
+  sass