You can set your pending intent as val updatedPendingIntent = PendingIntent.getActivity( applicationContext, NOTIFICATION_REQUEST_CODE, updatedIntent, PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT // setting the mutability flag ) According to the docs here: https://developer.android.com/about/versions/12/behavior-changes-12#pending-intent-mutability Strongly consider using FLAG_IMMUTABLE, only use FLAG_MUTABLE if some functionality depends on the PendingIntent being mutable, e.g. if it needs to be used with inline replies … Read more