diff --git a/package.json b/package.json
index 56ad82a..69124ee 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "compression": "~1.6.2",
     "config": "~1.25.1",
     "cors": "~2.8.1",
-    "debug": "~2.6.3",
+    "debug": "~4.0.0",
     "existential-default-deep": "~1.0.0",
     "exists-file": "~3.0.0",
     "express": "~4.15.2",