diff --git a/package.json b/package.json
index 8a0a8e3d..5ada4d35 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "accepts": "^1.3.0",
     "bytes": "^3.0.0",
     "compressible": "^2.0.0",
-    "debug": "^3.1.0",
+    "debug": "^4.0.0",
     "iltorb": "^2.0.0",
     "lru-cache": "^4.0.0",
     "multipipe": "^2.0.0",