diff --git a/03_sessions/package.json b/03_sessions/package.json
index e914b7f..ae20754 100644
--- a/03_sessions/package.json
+++ b/03_sessions/package.json
@@ -17,7 +17,7 @@
     "cookie-parser": "^1.3.4",
     "express": "^4.12.0",
     "express-session": "^1.10.3",
-    "handlebars": "^2.0.0",
+    "handlebars": "^4.5.3",
     "jquery": "^2.1.3",
     "js-yaml": "^3.2.7",
     "rendr": "^1.0.1",