diff --git a/package.json b/package.json
index e0b85cd..2a67419 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "cachemachine": "^1.7.0",
     "cfenv": "^1.0.3",
     "cloudant": "^1.6.2",
-    "debug": "^2.3.3",
+    "debug": "^4.3.4",
     "express": "^4.14.0",
     "express-handlebars": "^3.0.0",
     "lodash": "^4.17.2",