Swift isolation for protocols and actors

I'm using Swift 6 and Xcode 26 to develop an exchange monitoring application for macOS. To maintain information from different instruments on an exchange i use following protocols:

protocol DerivativeSymbol { associatedtype Ticker: DerivativeTicker var baseCoin: String {get } var quoteCoin: String {get } var ticker: Ticker? {get set} } protocol DerivativeTicker { var ask1Price: Double { get set } var bid1Price: Double { get set } var ask1Size: Double { get set } var bid1Size: Double { get set } var lastPrice: Double { get set } var indexPrice: Double { get set } }

and actor:

actor DerivativeSymbolActor<Symbol: DerivativeSymbol> { var data: [String: Symbol] = [:] var indexPrice: [String: Double] = [:] // ... func updateOptionTicker(symbol: String, ticker: Symbol.Ticker) { data[symbol]?.ticker = ticker } // ... func getAllPairsByBaseAsset(base: String) -> [Symbol] { return data.values.filter({$0.baseCoin == base}) } // ... }

In updateOptionTicker function I have warning:

Main actor-isolated property 'ticker' can not be mutated on a nonisolated actor instance

And in getAllPairsByBaseAsset I have another warning:

Main actor-isolated property 'baseCoin' can not be referenced from a nonisolated context

I assume that these warnings are because of default isolation of protocol to MainActor. Is there any solution to mark them as isolated in my actors DerivativeSymbolActor<Symbol: DerivativeSymbol> ?