Change multiple workbooks at one time

Hello all,

I have a workbook that I have already implemented for a lot of different products within my company. Today, my boss noticed that one of the drop down lists wasn't up to date, so he asked me to update it. I have done so, and saved the template with these changes. My question is: is there any way to go in and make this change to all of the other files or do I have to go into each file and make the changes. Thank you in advance for any help you can offer.