diff --git a/interface/locales/README.md b/interface/locales/README.md
index 91038dbe6..fa4a0e9be 100644
--- a/interface/locales/README.md
+++ b/interface/locales/README.md
@@ -16,6 +16,18 @@ export const LANGUAGE_OPTIONS = [
   // The rest of the languages
 ];
 ```
+Finally, add the new language code to the `dayjsLocales` object in `interface/locales/index.ts`. list of dayjs locales can be found [here](https://cdn.jsdelivr.net/npm/dayjs@1/locale.json)
+
+```ts
+const dayjsLocales: Record<string, any> = {
+  // Add the new language code and import statement here
+  // Example:
+  // es: () => import('dayjs/locale/es.js'),
+  en: () => import('dayjs/locale/en.js'),
+  de: () => import('dayjs/locale/de.js'),
+  // The rest of the languages
+};
+```
 
 ## Syncing locales