diff --git a/packages/lib/server-only/i18n/switch-i18n-language.ts b/packages/lib/server-only/i18n/switch-i18n-language.ts
index 6465f7ff8..2eae51eb2 100644
--- a/packages/lib/server-only/i18n/switch-i18n-language.ts
+++ b/packages/lib/server-only/i18n/switch-i18n-language.ts
@@ -4,5 +4,8 @@ import { cookies } from 'next/headers';
 
 // eslint-disable-next-line @typescript-eslint/require-await
 export const switchI18NLanguage = async (lang: string) => {
-  cookies().set('language', lang);
+  // Two year expiry.
+  const maxAge = 60 * 60 * 24 * 365 * 2;
+
+  cookies().set('language', lang, { maxAge });
 };