diff --git a/package.json b/package.json
index 19df7a8..e6bcd22 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
     "cors": "^2.7.1",
     "crypto": "0.0.3",
     "express": "^4.13.3",
-    "handlebars": "^3.0.3",
+    "handlebars": "^4.5.3",
     "lodash": "^3.10.0",
     "msgpack5": "^3.3.0",
     "node-json2html": "^1.0.0",