diff --git a/CHANGELOG.md b/CHANGELOG.md
index 31c6dc0..ff47641 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## [2.2.1](https://github.com/aws/aws-iot-device-sdk-js/releases/tag/v2.2.1) (Jan 24, 2018)
+
+Bugfixes/Imporovements
+  - Upgrade MQTT.js to 2.15.1 to address security issue
+
 ## [2.2.0](https://github.com/aws/aws-iot-device-sdk-js/releases/tag/v2.2.0) (Nov 29, 2017)
 
 Features
diff --git a/package.json b/package.json
index 75612f5..e8563ee 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "aws-iot-device-sdk",
   "description": "AWS IoT Node.js SDK for Embedded Devices",
-  "version": "2.2.0",
+  "version": "2.2.1",
   "author": {
     "name": "Amazon Web Services",
     "email": "",
@@ -28,7 +28,7 @@
     "mqtt"
   ],
   "dependencies": {
-    "mqtt": "2.14.0",
+    "mqtt": "2.15.1",
     "minimist": "1.2.0",
     "websocket-stream": "^5.0.1",
     "crypto-js": "3.1.6"