diff --git a/packages/packageA/package.json b/packages/packageA/package.json
index 100b774..3c90bf6 100644
--- a/packages/packageA/package.json
+++ b/packages/packageA/package.json
@@ -7,7 +7,7 @@
   "license": "ISC",
   "main": "lib/packageA.js",
   "dependencies": {
-    "debug": "^2.6.6"
+    "debug": "^4.0.0"
   },
   "directories": {
     "lib": "lib",
diff --git a/packages/packageB/package.json b/packages/packageB/package.json
index 10af259..0041de7 100644
--- a/packages/packageB/package.json
+++ b/packages/packageB/package.json
@@ -11,7 +11,7 @@
     "test": "__tests__"
   },
   "dependencies": {
-    "debug": "^2.6.6",
+    "debug": "^4.0.0",
     "express": "^3.1.0"
   },
   "files": [