# Update Codebase > Example with the set icon of the set "Foundation" (FDN) ## Prerequisites You need to have `lessc` or `sass` installed on your computer. ## Steps ### Updating Sass source 1. Open the `sass/_variables.scss` file in the repository. 2. Add the new set icon in the `@keyrune-icons` list. (You can see that i add the short code `fdn` and the unicode character `1f31f`) ```diff + ("Foundations", "fdn", "\1f31f"), ``` ### Updating Less source 3. Open the `less/icons.less` file in the repository. 4. Add the new set icon in the `@keyrune-icons` list. (You can see that i add the short code `fdn` and the unicode character `1f31f`) ```diff + .@{ss-prefix}-fdn:before { content: "\1f31f"; } // Foundation ``` Yaay 🎉 you have update the codebase now everything is ready only one steps to use the new icon --- **Go to the next step: [Generate CSS](./GenerateCss.md)** ---