diff --git a/Dockerfile b/Dockerfile
index 879e347..0a2cdfa 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # adapted from https://nodejs.org/en/docs/guides/nodejs-docker-webapp/
-FROM node:20.18.0-alpine3.20
+FROM node:20.18.2-alpine3.21
 RUN apk update && apk upgrade
 WORKDIR /usr/src/app
 COPY package*.json ./