diff --git a/codex-rs/login/src/auth/auth_tests.rs b/codex-rs/login/src/auth/auth_tests.rs
index 50dcc90e19..326adea6e4 100644
--- a/codex-rs/login/src/auth/auth_tests.rs
+++ b/codex-rs/login/src/auth/auth_tests.rs
@@ -243,6 +243,7 @@ fn dummy_chatgpt_auth_does_not_create_cwd_auth_json_when_identity_is_set() {
         agent_runtime_id: "agent_123".to_string(),
         agent_private_key: "pkcs8-base64".to_string(),
         registered_at: "2026-04-13T12:00:00Z".to_string(),
+        background_task_id: None,
     };
 
     auth.set_agent_identity(record.clone())