Are we caching the responses for these? They're just images and it looks like mine has been cached since last Friday.
Response
HTTP/1.1 200 OK
Content-Type: image/png; charset=utf-8
Content-Disposition: inline; filename="c61j8u4sr0dxfpdo.png"
Age: 0
Cache-Control: public, max-age=183377
Date: Wed, 17 Aug 2022 19:01:56 GMT
Content-Length: 55101
Connection: Keep-Alive
X-Content-Type-Options: nosniff
ETag: "246660c20ce24c970e3f6b9f4aa93788e37283c1"
X-Frame-Options: SAMEORIGIN
Last-Modified: Fri, 12 Aug 2022 21:58:13 GMT
Server: nginx