How to update your modpack to use newly added mods

1. Download the supplemental modpack linked alongside this link.
2. Open MultiMC. Right click the modpack you want to add these mods to, and click "View Folder" located in the bottom left.
3. Unzip the supplemental modpack directly into this folder. Make sure the new jars are not located in any subfolders.
4. Done! You can launch the upgraded modpack