diff --git a/backend/services/identity-service/prisma/migrations/20251220000000_set_user_id_sequence_start/migration.sql b/backend/services/identity-service/prisma/migrations/20251220000000_set_user_id_sequence_start/migration.sql
new file mode 100644
index 00000000..79361a12
--- /dev/null
+++ b/backend/services/identity-service/prisma/migrations/20251220000000_set_user_id_sequence_start/migration.sql
@@ -0,0 +1,21 @@
+-- Set user_id sequence to start from 10
+-- This reserves user IDs 1-9 for system accounts
+
+-- Check current sequence value
+DO $$
+DECLARE
+    current_val BIGINT;
+BEGIN
+    -- Get current sequence value
+    SELECT last_value INTO current_val FROM user_accounts_user_id_seq;
+
+    -- Only reset if current value is less than 10
+    IF current_val < 10 THEN
+        -- Set sequence to start from 10
+        -- Using setval with false means next nextval() will return 10
+        PERFORM setval('user_accounts_user_id_seq', 10, false);
+        RAISE NOTICE 'Sequence reset to start from 10';
+    ELSE
+        RAISE NOTICE 'Sequence already at % (>= 10), no reset needed', current_val;
+    END IF;
+END $$;