diff --git a/package.json b/package.json
index f81cc69..dc96572 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "dependencies": {
-    "express": "^4.17.1",
+    "express": "^5.1.0",
     "express-ws": "^2.0.0"
   },
   "description": "Piku node example.",