diff --git a/chapter13/worker/package.json b/chapter13/worker/package.json
index 7f204c0..78ba379 100644
--- a/chapter13/worker/package.json
+++ b/chapter13/worker/package.json
@@ -1,7 +1,7 @@
 {
   "dependencies": {
     "aws-sdk": "2.1.38",
-    "express": "4.13.1",
+    "express": "4.19.2",
     "body-parser": "1.13.2",
     "node-uuid": "1.4.3",
     "assert-plus": "0.1.5",