Ok, I will update my version. (I don't make it because affraid lose my btc)
You don't have to worry when updating electrum. Your wallet files will always be compatible.
Actually you should make sure to always have the up-to-date version of a wallet installed. This is the only way to somehow be protected against potential threats.
Make sure you have a backup of your 12/24 word seed. This seed is being used to generate all private keys inside your wallet. In case of an electrum update failing or a hardware failure, you will always be able to derive your keys again to access your coins.