diff --git a/index.js b/index.js
index 84e7211..b5d312f 100644
--- a/index.js
+++ b/index.js
@@ -3,10 +3,12 @@ const Log = require('./src/log');
 const Source = require('./src/source');
 const Reference = require('./src/reference');
 const Doc = require('./src/doc');
+const Output = require('./src/output');
 module.exports = {
   Option,
   Log,
   Source,
   Reference,
   Doc,
+  Output,
 };
diff --git a/package.json b/package.json
index 16f8e75..c5c70f2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mr-doc-utils",
-  "version": "2.1.1",
+  "version": "2.1.2",
   "description": "Utilities for Mr. Doc",
   "main": "index.js",
   "scripts": {