Unity WebGL downloads .unityweb files every time

I have a WebGL build hosted on a website. It takes around 10 seconds to download .unityweb files, and they are always downloaded from the server when I refresh the page (I'm not doing a hard refresh). I looked in "Network" in the browser's inspector and they always download from the server instead of using a cached version. I have "Data Caching" enabled on "Publishing Settings". I tried on Chrome 87 and Firefox 84.

Is there any way to allowing caching of these files?