To update the Proton VPN client,follow these steps:

1. Visit the Proton VPN Website: Go to protonvpn.com or protonvpn.org to access the official service.

2. Access the Updates Section: Navigate to the "Updates" section where new versions are listed.

3. Sign In to Your Account: Click on the "Sign In" button using your email and password. If your account is set up with a Google account, enter your credentials; otherwise, use your Proton account.

4. Download the Update: Locate the latest version of Proton VPN as a .zip file and click to download it.

5. Extract the Password File: After downloading, open the .zip file and click on the download button to extract the password file.

6. Update Your Account: Go back to ProtonVPN.com, log into your account, enter your Google account credentials (if available), and click "Update" to apply the new version.

7. Log In Again: After updating, log into your Proton account through the ProtonVPN website and enter your credentials.

8. Access Updated Features: Go to the Proton account, log into your browser, and try accessing websites with your credentials. Check the privacy settings to ensure everything is up to date.

9. Test Additional Features: If needed, go to Proton account settings > Privacy > Update, enter your credentials, and click "Update" to ensure all privacy settings are latest.

By following these steps, you should have the latest Proton VPN client, which may include new features and restrictions. This updated version will ensure your browsing experience is as secure as possible.