diff --git a/codex-rs/core/src/session/tests.rs b/codex-rs/core/src/session/tests.rs
index 2bc63b404f8a..93272c490694 100644
--- a/codex-rs/core/src/session/tests.rs
+++ b/codex-rs/core/src/session/tests.rs
@@ -9178,6 +9178,7 @@ async fn attach_in_memory_thread_store(
             originator: "test_originator".to_string(),
             base_instructions: BaseInstructions::default(),
             dynamic_tools: Vec::new(),
+            selected_capability_roots: Vec::new(),
             multi_agent_version: None,
             initial_window_id: Uuid::now_v7().to_string(),
             metadata: ThreadPersistenceMetadata {