diff --git a/Dockerfile b/Dockerfile
index 24aba8e..ac82534 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:20.17.0-bullseye@sha256:2e4f9bafd163646c7d8f03fc0b21bd984a7a87db69b3d6c7ef235add2216bbaf as build
+FROM node:20.18.0-bullseye@sha256:8ed4363da3ee6f4d6c95465d0837e92201ada020e706d00d4a4826bcd1074e0f as build
 
 # renovate: datasource=github-tags depName=gchq/CyberChef versioning=semver
 ENV CYBERCHEF_VERSION v10.19.2