diff --git a/app.js b/app.js
index 76d2970..d2ff7ca 100644
--- a/app.js
+++ b/app.js
@@ -2,6 +2,7 @@ var express = require('express');
 var app = express();
 var bodyParser = require('body-parser')
 var Vectorizer = require('./vectorizer');
+var argv = require('minimist')(process.argv.slice(2));
 
 app.use(bodyParser.urlencoded({ extended: false }))
 app.use(bodyParser.json({ type: 'application/*+json' }))
@@ -38,7 +39,7 @@ app.post('/convert', function (req, res, done) {
 	});
 });
 
-var server = app.listen(3000, function () {
+var server = app.listen(argv.p ? argv.p : 3000, function () {
   var host = server.address().address;
   var port = server.address().port;
 
diff --git a/package.json b/package.json
index ae0c5db..4680bb7 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,7 @@
     "body-parser": "^1.14.1",
     "express": "^4.13.3",
     "jpeg-js": "^0.1.1",
+    "minimist": "^1.2.0",
     "restler": "^3.4.0"
   }
 }