diff --git a/package.json b/package.json
index 329b7ad..0a439f6 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
     "node": "*"
   },
   "dependencies": {
-    "express": "~2.4.6",
+    "express": "~4.17.1",
     "nko": "*",
     "socket.io": "^2.0.1",
     "mime": "^1"