Open the App Store (iOS) or Google Play Store (Android)
Search for “Roblox”
Select Roblox
Tap Update (or Update All)
If Roblox isn’t listed, search again and confirm it’s installed
Wait for the update to finish
Restart the Roblox app
If the update still doesn’t appear, uninstall Roblox
Reinstall Roblox from the App Store/Google Play Store
Launch Roblox and sign in again if prompted