diff --git a/kustomize/demo/static/assets/Dockerfile b/kustomize/demo/static/assets/Dockerfile
index 312f32bfd..2f5a0e073 100644
--- a/kustomize/demo/static/assets/Dockerfile
+++ b/kustomize/demo/static/assets/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:24-alpine
+FROM node:24-alpine@sha256:2867d550cf9d8bb50059a0fff528741f11a84d985c732e60e19e8e75c7239c43
 
 # Set the working directory for building and running the server
 WORKDIR /usr/src/server