html - Have long cache expires: need to rename background img files as well as css? -

I have a longer cash cessation header and I am making some changes to my website. I am changing the filenames of .css and .js files to prevent the old files from loading the user's cache.

Do I need to rename the background image (who has also been replaced) in CSS? I'm thinking yes, but thought I'm seeing ...

Yes - to make sure For that browser select new image files in this scenario, you should also change the image file name