diff --git a/package.json b/package.json
index 81fbe2aa..130e414b 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "bootstrap": "4.0.0-alpha.2",
     "cookie-parser": "~1.3.5",
     "cookie-session": "^2.0.0-alpha.1",
-    "debug": "~2.2.0",
+    "debug": "~4.1.1",
     "express": "~4.13.1",
     "express-validator": "^2.20.5",
     "jade": "~1.11.0",