diff --git a/Dockerfile b/Dockerfile
index bbff95b..d93a1d2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:16.20.2-bullseye@sha256:cd59a61258b82b86c1ff0ead50c8a689f6c3483c5ed21036e11ee741add419eb as build
+FROM node:18.20.4-bullseye@sha256:df821a38cd058aa8681bdbf8735d3a28688e6336624dbf902e7877d350c7807a as build
 
 # renovate: datasource=github-tags depName=gchq/CyberChef versioning=semver
 ENV CYBERCHEF_VERSION v10.18.7