diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
index 65e5814..018c2d8 100644
--- a/.github/copilot-instructions.md
+++ b/.github/copilot-instructions.md
@@ -29,7 +29,7 @@ Default behavior to preserve unless a training scenario says otherwise:
 - Favorite count includes unread favorites.
 - Empty-state copy should mention changing the search term, genre, or reading status.
 
-Use the current Node.js LTS. The app declares `engines.node` as `^20.19.0 || >=22.12.0`. CI uses Node 22.
+Use the current Node.js LTS. The app declares `engines.node` as `>=24.0.0`. CI uses Node 24.
 
 ## Validation
 
diff --git a/.github/workflows/book-app-web.yml b/.github/workflows/book-app-web.yml
index bfe611e..44b4caf 100644
--- a/.github/workflows/book-app-web.yml
+++ b/.github/workflows/book-app-web.yml
@@ -20,7 +20,7 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
         with:
-          node-version: "22"
+          node-version: "24"
           cache: npm
           cache-dependency-path: samples/book-app-web/package-lock.json
 
diff --git a/appendices/training-github-scenarios.md b/appendices/training-github-scenarios.md
index 30778f0..6bf13d4 100644
--- a/appendices/training-github-scenarios.md
+++ b/appendices/training-github-scenarios.md
@@ -175,7 +175,7 @@ This matches the script's conversation comment. Do not create an inline review t
 
 ## Manual fallback: Create a failing check example
 
-The repository includes the [Book app web workflow](../.github/workflows/book-app-web.yml). It uses Node.js 22, installs dependencies with `npm ci`, runs `npm test -- --run`, and builds `samples/book-app-web` with `npm run build`.
+The repository includes the [Book app web workflow](../.github/workflows/book-app-web.yml). It uses Node.js 24, installs dependencies with `npm ci`, runs `npm test -- --run`, and builds `samples/book-app-web` with `npm run build`.
 
 The **Failing stats check practice** PR created above is the failing-check example. Do not create a second branch or PR for it.
 
diff --git a/samples/book-app-web/package-lock.json b/samples/book-app-web/package-lock.json
index 5412bbd..2f61470 100644
--- a/samples/book-app-web/package-lock.json
+++ b/samples/book-app-web/package-lock.json
@@ -22,7 +22,7 @@
         "vitest": "^5.0.3"
       },
       "engines": {
-        "node": "^20.19.0 || >=22.12.0"
+        "node": ">=24.0.0"
       }
     },
     "node_modules/@acemir/cssom": {
diff --git a/samples/book-app-web/package.json b/samples/book-app-web/package.json
index 3a79288..75855f7 100644
--- a/samples/book-app-web/package.json
+++ b/samples/book-app-web/package.json
@@ -4,7 +4,7 @@
   "private": true,
   "type": "module",
   "engines": {
-    "node": "^20.19.0 || >=22.12.0"
+    "node": ">=24.0.0"
   },
   "scripts": {
     "dev": "vite",