diff --git a/package.json b/package.json
index 868eed0..c75f4ab 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "body-parser": "^1.18.3",
     "chalk": "1.1.1",
     "d3": "3.5.6",
-    "debug": "2.2.0",
+    "debug": "^4.1.0",
     "express": "^4.16.4",
     "geoip-lite": "^1.3.2",
     "grunt": "^1.0.3",