diff --git a/package.json b/package.json
index 00d395f..06ae7e4 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
     "start": "node app.js"
   },
   "dependencies": {
-    "express": "3.4.0",
+    "express": "4.17.1",
     "jade": "*",
     "socket.io": "^2.1.1",
     "swig": "*",