diff --git a/demo/2015.12.23-session/package.json b/demo/2015.12.23-session/package.json
index 3c6d5f2c..84ed7490 100644
--- a/demo/2015.12.23-session/package.json
+++ b/demo/2015.12.23-session/package.json
@@ -8,7 +8,7 @@
   "dependencies": {
     "body-parser": "~1.13.2",
     "cookie-parser": "~1.3.5",
-    "debug": "~2.2.0",
+    "debug": "~4.1.1",
     "express": "~4.13.1",
     "express-session": "^1.12.1",
     "jade": "~1.11.0",