diff --git a/lib/hamljs/railtie.rb b/lib/hamljs/railtie.rb
index 22b3e67..1fda2c8 100644
--- a/lib/hamljs/railtie.rb
+++ b/lib/hamljs/railtie.rb
@@ -1,3 +1,5 @@
+require 'sprockets'
+require 'sprockets/engines'
 require 'hamljs/sprockets_template'
 
 module Hamljs