Woo Commerce issue/ notification

Hi all,
Recently, I received a pop-up notice in my dash that reads:
“Your theme (Highend) contains outdated copies of some WooCommerce template files. These files may need updating to ensure they are compatible with the current version of WooCommerce. Suggestions to fix this:

Update your theme to the latest version. If no update is available contact your theme author asking about compatibility with the current WooCommerce version.
If you copied over a template file to change something, then you will need to copy the new version of the template and apply your changes again”.

Since there is no available update, I assume that this is something I should bring to your attention. Please let me know if this will be worked out for the next update or if this is an individual issue that only I am experiencing.
Highend Version: 3.5.1.3

Many thanks as always,
Kristine