diff --git a/package.json b/package.json
index fa24464..f6c6b55 100644
--- a/package.json
+++ b/package.json
@@ -30,6 +30,6 @@
     "testEnvironment": "node"
   },
   "dependencies": {
-    "duplexify": "^3.6.1"
+    "duplexify": "^4.1.0"
   }
 }