diff --git a/package.json b/package.json
index 1119c95ea3..2654cd1285 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "cookie-signature": "1.0.6",
     "ejs": "2.3.4",
     "ejs-locals": "1.0.2",
-    "express": "3.21.2",
+    "express": "4.0.0",
     "express-handlebars": "3.0.0",
     "express-session": "1.12.1",
     "fs-extra": "0.18.4",