diff --git a/index.js b/index.js
index 574005a..0cf4c36 100644
--- a/index.js
+++ b/index.js
@@ -1,4 +1,4 @@
-var _ = require('underscore');
+var _ = require('lodash');
 
 module.exports = function (source) {
   this.cacheable && this.cacheable();