diff --git a/Dockerfile b/Dockerfile
index 6f38372..2c99f81 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Shared build: generates /dist (Astro site + admin SPA) and tina/__generated__
-FROM node:20-alpine AS builder
+FROM node:22-alpine AS builder
 WORKDIR /app
 COPY package*.json ./
 RUN npm ci --legacy-peer-deps
@@ -15,7 +15,7 @@ COPY --from=builder /app/dist /usr/share/nginx/html
 EXPOSE 80
 
 # Backend: TinaCMS self-hosted API server
-FROM node:20-alpine AS backend
+FROM node:22-alpine AS backend
 WORKDIR /app
 COPY package*.json ./
 RUN npm ci --legacy-peer-deps --omit=dev