diff --git a/.github/workflows/check-build.yml b/.github/workflows/check-build.yml
index 4d2de7041..ce26fdcf3 100644
--- a/.github/workflows/check-build.yml
+++ b/.github/workflows/check-build.yml
@@ -12,7 +12,7 @@ jobs:
       - name: Set up Node
         uses: actions/setup-node@v4
         with:
-          node-version: 22
+          node-version: 24
 
       - name: Install client dependencies
         working-directory: client
@@ -29,7 +29,7 @@ jobs:
       - name: Set up Node
         uses: actions/setup-node@v4
         with:
-          node-version: 22
+          node-version: 24
 
       - name: Install server dependencies
         working-directory: server
diff --git a/.github/workflows/check-format.yml b/.github/workflows/check-format.yml
index 056e2c586..add66356f 100644
--- a/.github/workflows/check-format.yml
+++ b/.github/workflows/check-format.yml
@@ -12,7 +12,7 @@ jobs:
       - name: Set up Node
         uses: actions/setup-node@v4
         with:
-          node-version: 22
+          node-version: 24
 
       - name: Install client dependencies
         working-directory: client
@@ -30,7 +30,7 @@ jobs:
       - name: Set up Node
         uses: actions/setup-node@v4
         with:
-          node-version: 22
+          node-version: 24
 
       - name: Install server dependencies
         working-directory: server
diff --git a/.github/workflows/check-tests.yml b/.github/workflows/check-tests.yml
index 8d0688eb2..9e5c8fedb 100644
--- a/.github/workflows/check-tests.yml
+++ b/.github/workflows/check-tests.yml
@@ -12,7 +12,7 @@ jobs:
       - name: Set up Node
         uses: actions/setup-node@v4
         with:
-          node-version: 22
+          node-version: 24
 
       - name: Install server dependencies
         working-directory: server
diff --git a/CLAUDE.md b/CLAUDE.md
index 498858e16..fc0647bf8 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -62,7 +62,7 @@ VITE_APP_LOG_LEVEL="debug"
 
 ### Monorepo Structure
 - `/client` - React 18 + TypeScript + Vite + MUI frontend
-- `/server` - Node.js 20+ + Express + TypeScript backend
+- `/server` - Node.js 24+ + Express + TypeScript backend
 - `/docker` - Multi-environment Docker configs (dev, staging, prod, arm, mono)
 
 ### Backend Layers
diff --git a/client/package.json b/client/package.json
index a9e53f93c..3d19fe825 100644
--- a/client/package.json
+++ b/client/package.json
@@ -2,6 +2,10 @@
 	"name": "client",
 	"private": true,
 	"version": "3.12.0",
+	"engines": {
+		"node": ">=24",
+		"npm": ">=11"
+	},
 	"type": "module",
 	"scripts": {
 		"lockfile": "docker run --rm -v \"$PWD\":/w -w /w $(grep -m1 -o 'node:[^ ]*' ../docker/Dockerfile) npm install --package-lock-only",
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 380210f53..67f2ca54c 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -4,7 +4,7 @@
 # Build on the host arch (BUILDPLATFORM) rather than under QEMU — the output is
 # pure JS so it's arch-independent, and this avoids the esbuild host/native
 # binary version mismatch under emulation.
-FROM --platform=$BUILDPLATFORM node:22-slim AS frontend-build
+FROM --platform=$BUILDPLATFORM node:24-slim AS frontend-build
 
 WORKDIR /app/client
 
@@ -19,7 +19,7 @@ RUN npm run build
 # ---------------------
 # Backend stage
 # ---------------------
-FROM node:22-slim AS app
+FROM node:24-slim AS app
 
 # Install ping
 RUN apt-get update \
diff --git a/server/package.json b/server/package.json
index 49614f3e6..a9027b41b 100755
--- a/server/package.json
+++ b/server/package.json
@@ -30,7 +30,8 @@
 	"author": "",
 	"license": "ISC",
 	"engines": {
-		"node": ">=20"
+		"node": ">=24",
+		"npm": ">=11"
 	},
 	"dependencies": {
 		"@csstools/css-tokenizer": "^3.0.4",