How to change the © 2021 Alexander Philip architect

At the foot of the webpage is the copyright details held in a container... I built this in 2021 and can't see now how to update © 2021 Alexander Philip architect to © 2022 Alexander Philip architect ?  Any suggestions? Thanks - see code below for clarity....

<div id="container">
        <div id="left">
            <h4 style="font-size:1em">© 2021 Alexander Philip architect </h4>
        </div>
        <div id="center">
            <img class="logo" src="https://static1.squarespace.com/static/605382fc4dd84e6ae1d8863a/t/60a127d6ce15a13eb8328822/1621174231294/Edinburgh-Architect-Scotland.png" alt="Alexander Philip Architect is a member of RIBA, RIAS & ARB" title="Alexander Philip Architect is a member of RIBA, RIAS & ARB">
        </div>
        <div id="right">
            <h4 style="font-size:1em">
                <a href="/home">home</a>
                 | 
                <a href="/portfolio">portfolio</a>
                 | 
                <a href="/about">about</a>
                  | 
                <a href="/contact">contact</a>
                 | 
                <a href="/privacy-policy">privacy</a>
            </h4>
        </div>
    </div>

    <h4 id="copyright">© 2021 Alexander Philip architect </h4>
    <p id="privacy">
        <a href="/privacy-policy">privacy</a>
    </p>
 

oops meant © 2023 Alexander Philip architect !