diff --git a/in_app_purchases/step_10/dart-backend/pubspec.lock b/in_app_purchases/step_10/dart-backend/pubspec.lock
index 5f6ac855e8..2c47f81c8d 100644
--- a/in_app_purchases/step_10/dart-backend/pubspec.lock
+++ b/in_app_purchases/step_10/dart-backend/pubspec.lock
@@ -357,10 +357,10 @@ packages:
     dependency: "direct main"
     description:
       name: shelf
-      sha256: e7dd780a7ffb623c57850b33f43309312fc863fb6aa3d276a754bb299839ef12
+      sha256: e75e9cf311d7fd712048038cc17c25199c38536c20330d53e7db058b543d5a48
       url: "https://pub.dev"
     source: hosted
-    version: "1.4.2"
+    version: "1.4.3"
   shelf_packages_handler:
     dependency: transitive
     description: