diff --git a/demo/demo.sql b/demo/demo.sql
index e0c9a39..cff8cb0 100644
--- a/demo/demo.sql
+++ b/demo/demo.sql
@@ -4,9 +4,9 @@ begin;
 set search_path to camper, auth, public;
 
 alter table auth."user" alter column user_id restart with 42;
-insert into auth."user" (email, name, password)
-values ('demo@camper', 'Demo User', 'demo')
-     , ('admin@camper', 'Demo Admin', 'admin')
+insert into auth."user" (email, name, password, lang_tag)
+values ('demo@camper', 'Demo User', 'demo', 'ca')
+     , ('admin@camper', 'Demo Admin', 'admin', 'ca')
 ;
 
 alter table company alter column company_id restart with 52;