diff --git a/frontend/src/i18n/index.ts b/frontend/src/i18n/index.ts
index 246ddcfef..27cdd4c72 100644
--- a/frontend/src/i18n/index.ts
+++ b/frontend/src/i18n/index.ts
@@ -22,6 +22,7 @@ export const SUPPORTED_LOCALES = {
 	'ar-SA': 'اَلْعَرَبِيَّةُ',
 	'sl-SI': 'Slovenščina',
 	'pt-BR': 'Português Brasileiro',
+	'hr-HR': 'Hrvatski',
 	// IMPORTANT: Also add new languages to useDayjsLanguageSync
 } as const
 
diff --git a/frontend/src/i18n/useDayjsLanguageSync.ts b/frontend/src/i18n/useDayjsLanguageSync.ts
index 5d3a194d6..c40647452 100644
--- a/frontend/src/i18n/useDayjsLanguageSync.ts
+++ b/frontend/src/i18n/useDayjsLanguageSync.ts
@@ -23,6 +23,7 @@ export const DAYJS_LOCALE_MAPPING = {
 	'ar-SA': 'ar-sa',
 	'sl-SI': 'sl',
 	'pt-BR': 'pt',
+	'hr-HR': 'hr',
 } as Record<SupportedLocale, ISOLanguage>
 
 export const DAYJS_LANGUAGE_IMPORTS = {