diff --git a/package.json b/package.json
index 290e18e..8742da7 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "mocha": "~2.2.4"
   },
   "dependencies": {
-    "debug": "~2.1.3",
+    "debug": "~4.1.1",
     "format-throw": "~0.1.0",
     "js-yaml": "~3.2.7",
     "lodash": "~3.6.0",