diff --git a/package.json b/package.json
index 4b2c02a..d6ec004 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "body-parser": "^1.15.2",
     "cfenv": "^1.0.3",
     "cloudant-envoy": "^0.2.2",
-    "crypto-js": "^3.1.6",
+    "crypto-js": "^4.0.0",
     "express": "^4.14.0",
     "request": "^2.74.0",
     "uuid": "^2.0.2"