diff --git a/packages/stream-multiplexer-mplex/package.json b/packages/stream-multiplexer-mplex/package.json
index ca044a2354..490e9972a8 100644
--- a/packages/stream-multiplexer-mplex/package.json
+++ b/packages/stream-multiplexer-mplex/package.json
@@ -71,7 +71,7 @@
   "devDependencies": {
     "@libp2p/interface-compliance-tests": "^4.0.6",
     "aegir": "^40.0.8",
-    "cborg": "^2.0.1",
+    "cborg": "^4.0.3",
     "delay": "^6.0.0",
     "iso-random-stream": "^2.0.2",
     "it-all": "^3.0.1",