diff --git a/.env.local.example b/.env.local.example
index 27e1e11..f173197 100644
--- a/.env.local.example
+++ b/.env.local.example
@@ -42,6 +42,9 @@ META_APP_SECRET=your-meta-app-secret
 # or a background worker that has no incoming request.
 NEXT_PUBLIC_SITE_URL=https://crm.example.com
 
+# Default language locale (e.g. en, es)
+NEXT_PUBLIC_APP_LOCALE=en
+
 # ============================================================
 # OPTIONAL — only needed if you use the feature.
 # ============================================================