diff --git a/Dockerfile b/Dockerfile
index 1c41c86..ab4fb7e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:10.24.1-buster@sha256:05e259ab6478ae6032163ce34683bfccb495c8219f2f01a8d30889bb3ce33084 as build
+FROM node:15.14.0-buster@sha256:582f1e83e64e53d1ed247a47e77c81f3a33b7641f7f7f68cb4bf873e5f2b97b3 as build
 
 # renovate: datasource=github-tags depName=gchq/CyberChef versioning=semver
 ENV CYBERCHEF_VERSION v9.28.0