diff --git a/benchmark/install-jsdom.js b/benchmark/install-jsdom.js
new file mode 100644
index 0000000000..87f3ff00aa
--- /dev/null
+++ b/benchmark/install-jsdom.js
@@ -0,0 +1,4 @@
+const exec = require('child_process').execSync
+
+console.log('try to install jsdom')
+exec('npm install jsdom@^7.0.2')
diff --git a/benchmark/suite.js b/benchmark/suite.js
index 8b72d4127a..21ca30c641 100644
--- a/benchmark/suite.js
+++ b/benchmark/suite.js
@@ -2,6 +2,9 @@ var fs = require('fs');
 var path = require('path');
 
 var Benchmark = require('benchmark');
+
+require('./install-jsdom')
+
 var jsdom = require('jsdom');
 var cheerio = require('..');
 
diff --git a/package.json b/package.json
index 2e9dac7857..918b104fc4 100644
--- a/package.json
+++ b/package.json
@@ -42,8 +42,5 @@
   },
   "scripts": {
     "test": "make test"
-  },
-  "optionalDependencies": {
-    "jsdom": "^7.0.2"
   }
 }