diff --git a/package.json b/package.json
index 6c43dcb..6ce0a19 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,7 @@
     "cookie-parser": "*",
     "ejs": "*",
     "errorhandler": "*",
+    "exec": "^0.2.1",
     "express": "^4.13.4",
     "express-session": "*",
     "htmlparser": "^1.7.7",