diff --git a/jakefile.js b/jakefile.js
index 0eebf2e0..271c167d 100644
--- a/jakefile.js
+++ b/jakefile.js
@@ -60,7 +60,6 @@ publishTask('ejs', ['build'], function () {
     'README.md',
     'LICENSE',
     'package.json',
-    'postinstall.js',
     'ejs.js',
     'ejs.min.js',
     'lib/**',
diff --git a/package.json b/package.json
index 5d140238..cc23ea05 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,6 @@
     "node": ">=0.10.0"
   },
   "scripts": {
-    "test": "mocha",
-    "postinstall": "node --harmony ./postinstall.js"
+    "test": "mocha"
   }
 }
diff --git a/postinstall.js b/postinstall.js
deleted file mode 100755
index e62f3c67..00000000
--- a/postinstall.js
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/usr/bin/env node
-
-'use strict';
-
-function isTrue(value) {
-  return !!value && value !== '0' && value !== 'false';
-}
-
-let envDisable = isTrue(process.env.DISABLE_OPENCOLLECTIVE) || isTrue(process.env.CI);
-let logLevel = process.env.npm_config_loglevel;
-let logLevelDisplay = ['silent', 'error', 'warn'].indexOf(logLevel) > -1;
-
-if (!(envDisable || logLevelDisplay)) {
-  console.log('Thank you for installing \u001b[35mEJS\u001b[0m: built with the \u001b[32mJake\u001b[0m JavaScript build tool (\u001b[32mhttps://jakejs.com/\u001b[0m\)\n');
-}
-
-