diff --git a/package.json b/package.json
index ee7ba60..1ee681e 100644
--- a/package.json
+++ b/package.json
@@ -19,6 +19,7 @@
   "author": "Rod Vagg <r@va.gg> (https://github.com/rvagg)",
   "license": "MIT",
   "dependencies": {
+    "inherits": "^2.0.4",
     "readable-stream": "2 || 3"
   },
   "devDependencies": {
diff --git a/through2.js b/through2.js
index 37d61d9..2858ffe 100644
--- a/through2.js
+++ b/through2.js
@@ -1,5 +1,5 @@
 var Transform = require('readable-stream').Transform
-  , inherits  = require('util').inherits
+  , inherits  = require('inherits')
 
 function DestroyableTransform(opts) {
   Transform.call(this, opts)