diff --git a/Dockerfile b/Dockerfile
index aefbf65..4c62fa8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:16.20.2-bullseye@sha256:cd59a61258b82b86c1ff0ead50c8a689f6c3483c5ed21036e11ee741add419eb as build
+FROM node:20.17.0-bullseye@sha256:d7c934f7d5681f3da7236d53275d1853972ddbda20c86909526dcdac6db83594 as build
 
 # renovate: datasource=github-tags depName=gchq/CyberChef versioning=semver
 ENV CYBERCHEF_VERSION v10.18.7