diff --git a/package.json b/package.json
index 31d6241..63a6ea5 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "supertest": "^1.2.0"
   },
   "dependencies": {
-    "express": "^4.14.0",
+    "express": "^4.21.1",
     "less-middleware": "^2.1.0",
     "serve-favicon": "^2.3.0",
     "socket.io": "^1.4.6",