diff --git a/package.json b/package.json
index ae9b5a2..af9c9d7 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
   "dependencies": {
     "async": "^2.6.0",
     "chalk": "^2.3.0",
-    "debug": "^3.1.0",
+    "debug": "^4.1.1",
     "express": "^4.15.4",
     "hostile": "^1.3.0",
     "lodash": "^4.17.4",