diff --git a/index.js b/index.js
index 9f52288..e7856e8 100644
--- a/index.js
+++ b/index.js
@@ -17,3 +17,4 @@ exports.createPromiseCallback = require('./lib/utils').createPromiseCallback;
 // KeyValue helpers
 exports.ModelKeyComposer = require('./lib/model-key-composer');
 exports.BinaryPacker = require('./lib/binary-packer');
+exports.JSONStringPacker = require('./lib/json-string-packer');