diff --git a/Dockerfile b/Dockerfile
index 248090b..9f3e3d4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:20.19.1-bullseye@sha256:50ef2129ee173306c7995c45d8be004cd13ac799cd2142a4a2b442bafcd77d8c as build
+FROM node:20.19.1-bullseye@sha256:218b79a1d4c9d749dc793c21ecae7d7e04feaefc19e4cc2c3f5994358a310491 as build
 
 # renovate: datasource=github-tags depName=gchq/CyberChef versioning=semver
 ENV CYBERCHEF_VERSION v10.19.4