diff --git a/docs/Dockerfile b/docs/Dockerfile
index a7bb68a..e67f4c3 100644
--- a/docs/Dockerfile
+++ b/docs/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:18-alpine as builder
+FROM node:21-alpine as builder
 
 COPY systemofadownload.yaml ./
 RUN npm install -g redoc-cli && redoc-cli bundle -o index.html systemofadownload.yaml