Upload xlsm files

Hi,

I have developed an application in Excel which I put on my website for others to download. Today I tried to upload an xlsm version of this application but found out that WordPress does not support this file type, though I’m pretty convinced that it has supported it in the past. I cannot work around this limitation because WordPress also does not allow compressed files of any kind (zip, rar, etc.). What do I do now??? Is there any possibility to allow xlsm files to be uploaded to my website?

Thanks!

Chen