diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c7b9aa2..ae7a61d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,25 +1,25 @@
 name: CI
 on:
   push:
-    branches: [ $default-branch ]
+    branches: [$default-branch]
   pull_request:
 jobs:
   test:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: ['2.7', '3.0', '3.1']
+        ruby: ["3.0", "3.1", "3.2"]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Set up Ruby ${{ matrix.ruby }}
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true
       - name: Set up Node
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v3
         with:
-          node-version: '14'
+          node-version: "18"
       - name: Install dependencies
         run: bundle install --without production
       - name: Run tests
diff --git a/README.md b/README.md
index c7508aa..14255d2 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,4 @@
-Projekt Euler
-=============
+# Projekt Euler
 
 ![Build Status](https://github.com/projekteuler/projekteuler/workflows/CI/badge.svg)
 
@@ -7,30 +6,31 @@ This is the Ruby on Rails web-app powering [projekteuler.de](https://projekteule
 It allows visitors to view and suggest German translations of the maths puzzles found on [projecteuler.net](https://projecteuler.net).
 
 ## Getting started
-1. Download this repository, e.g., with `git clone`.
-2. Make sure [NodeJS](https://nodejs.org) is installed.
-3. Navigate inside the repository folder.
-4. Use bundler to install all required gems.
-        
+
+1.  Download this repository, e.g., with `git clone`.
+2.  Make sure [NodeJS >= 18](https://nodejs.org) is installed.
+3.  Navigate inside the repository folder.
+4.  Use bundler to install all required gems.
         $ bundle install
-        
-5. Setup the database:
+5.  Setup the database:
 
         $ bin/rails db:setup
-        
-6. Start the server:
+
+6.  Start the server:
 
         $ bin/rails server
-        
-7. Open `http://localhost:3000` in your browser. You should see the web app up and running!
-8. Start playing with the web app. By default, the database will contain some users and translations. The user `admin` can review translations, while the user `translator` has submitted some translations.
-You can login as any user by clicking the Login button and entering their name. This is simply a mock OAuth login; in production mode, GitHub is used for login.
-9. If you ever want to reset the database to the original state, run `rails db:reset`.
+
+7.  Open `http://localhost:3000` in your browser. You should see the web app up and running!
+8.  Start playing with the web app. By default, the database will contain some users and translations. The user `admin` can review translations, while the user `translator` has submitted some translations.
+    You can login as any user by clicking the Login button and entering their name. This is simply a mock OAuth login; in production mode, GitHub is used for login.
+9.  If you ever want to reset the database to the original state, run `rails db:reset`.
 
 ## Contributing
+
 Do you have a suggestion for an improvement for the web app? Please create an [issue](https://github.com/projekteuler/projekteuler/issues) for it.
 
 Do you want to implement this improvement yourself? Follow these steps:
+
 1. Fork this repository on GitHub.
 2. Create a new branch for your improvement
 3. Implement your improvement, and create tests for it if applicable.
@@ -43,12 +43,12 @@ Do you want to implement this improvement yourself? Follow these steps:
 3. Copy all files from this repository.
 4. Make sure the Rails environment is set to `production`.
 5. Set up the following environment variables:
-    * `RAILS_MASTER_KEY`: The master key for decryption of the Rails credentials
-    * `DATABASE_NAME`: The name of the MySQL database
-    * `DATABASE_USERNAME`: The username for the MYSQL database
-    * `DATABASE_PASSWORD`: The password for the MYSQL database
-    * `GITHUB_CLIENT_ID`:  The client ID of your GitHub OAuth App (that you will need to create)
-    * `GITHUB_CLIENT_SECRET`:  The client secret of the GitHub OAuth App
+   - `RAILS_MASTER_KEY`: The master key for decryption of the Rails credentials
+   - `DATABASE_NAME`: The name of the MySQL database
+   - `DATABASE_USERNAME`: The username for the MYSQL database
+   - `DATABASE_PASSWORD`: The password for the MYSQL database
+   - `GITHUB_CLIENT_ID`: The client ID of your GitHub OAuth App (that you will need to create)
+   - `GITHUB_CLIENT_SECRET`: The client secret of the GitHub OAuth App
 6. Install all required gems with `bundle install`.
 7. Load the database schema with `bin/rails db:schema:load`.
 8. Precompile all assets with `bin/rails assets:precompile`.
@@ -57,4 +57,5 @@ Do you want to implement this improvement yourself? Follow these steps:
 Anytime you update the files, you should run `bin/rails db:migrate`, `bin/rails log:clear tmp:clear`, `bin/rails assets:precompile` and then restart the server.
 
 ## License
+
 This project is released under the [MIT License](https://opensource.org/licenses/MIT).