diff --git a/package.json b/package.json
index 3e997ec..7ae305d 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "dependencies": {
     "express": "3.5.1",
     "websocket": "",
-    "pty.js": "",
+    "pty.js": "git+https://github.com/terryschen/pty.js",
     "optimist": "",
     "waitpid": ""
   },