diff --git a/00_simple/package.json b/00_simple/package.json
index c6a5821..a8208be 100644
--- a/00_simple/package.json
+++ b/00_simple/package.json
@@ -15,7 +15,7 @@
     "body-parser": "^1.12.0",
     "compression": "^1.4.1",
     "express": "^4.12.0",
-    "handlebars": "^2.0.0",
+    "handlebars": "^4.5.3",
     "jquery": "^2.1.3",
     "rendr": "^1.0.1",
     "rendr-handlebars": "^2.0.0",