If you have created your Table of Contents with Word, you can update it by doing the following:

PC

• Right mouse click on the Table you wish to update
• Choose "Update field" from the menu that appears

If you want to update all fields in your document:

1. Press CTRL + A.
2. Press F.

MAC

1. Choose Option, Command, Shift and U.

Note, this will update all fields in your document.