diff --git a/Dockerfile b/Dockerfile
index cd30ef7..d91ad8f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,7 +17,7 @@ WORKDIR /app
 # image for creating the documentation
 ######################################
 
-FROM node:20.3.0-alpine as DOCS
+FROM node:21.5.0-alpine as DOCS
 
 # install packages
 RUN apk add --update --no-cache bash make git zsh curl tmux