Is it possible to upgrade the operating system?

To upgrade to the next version (macOS Ventura 13), you would need a MacBook Air 2018 or later. You can check your model in  > About This Mac.

ramesh80 wrote:

Is it possible to upgrade the operating system?

Without any information about which specific Mac you have – including the hardware model year, we cannot tell you.

You could check the "Is your Mac compatible?" lists here: That, also, will require you to obtain this information.

Update macOS on Mac - Apple Support

Check the compatibility of these newer macOS versions with your MacBook Air.

• macOS 13 Ventura is compatible with these computers (c.2017)

• macOS 14 Sonoma is compatible with these computers (c.2018)

• macOS 15 Sequoia is compatible with these computers (c.2018)

• macOS 26 Tahoe is compatible with these computers (c.2020)

If your specific Mac model+year is compatible with any of these newer macOS, then this:

Update macOS on Mac - Apple Support