diff --git a/package.json b/package.json
index aafce8c..d6a49e5 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
   "license": "BSD-2-Clause",
   "dependencies": {
     "jade": "~0.35.0",
-    "express": "~3.4.4",
+    "express": "~4.17.1",
     "stylus": "~0.40.2",
     "mongoose": "~3.8.0",
     "passport-local": "~0.1.6",