diff --git a/examples/sockjs/package.json b/examples/sockjs/package.json
index 5e7f522..7dbe83d 100644
--- a/examples/sockjs/package.json
+++ b/examples/sockjs/package.json
@@ -2,7 +2,7 @@
     "name"         : "websocket-multiplex-sockjs-example",
     "version"      : "0.0.0-unreleasable",
     "dependencies" : {
-        "express"             : "2.5.8",
+        "express"             : "4.17.1",
         "sockjs"              : "0.3.x",
         "websocket-multiplex" : "*"
     }