Android

Here's how to update the game on Android device:

1. Open the Google Play Store.
2. At the top right, tap the profile icon.
3. Tap "Manage apps & device". Select tab "Manage". Apps with an update available are labeled "Update available"
4. Tap Update.

You can find more information about update app in Google Play Store in [here]

iOS

Follow these steps to update your app:

1. Open the App Store.
2. Tap your profile icon at the top of the screen.
3. Scroll to see pending updates and release notes.
4. Tap Update next to an app to update only that app, or tap Update All.

You can find more information about update app in Google Play Store in [here]