diff --git a/samples/simple-chat/package.json b/samples/simple-chat/package.json
index 7e9caac..dbd8baf 100644
--- a/samples/simple-chat/package.json
+++ b/samples/simple-chat/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",
     "hbs": "~3.1.0",
     "morgan": "~1.6.1",