diff --git a/codex-rs/core/src/guardian/mod.rs b/codex-rs/core/src/guardian/mod.rs
index 67e9a828ee1a..4fa150a232a3 100644
--- a/codex-rs/core/src/guardian/mod.rs
+++ b/codex-rs/core/src/guardian/mod.rs
@@ -34,7 +34,7 @@ pub(crate) use review::review_approval_request_with_cancel;
 pub(crate) use review::routes_approval_to_guardian;
 pub(crate) use review_session::GuardianReviewSessionManager;
 
-const GUARDIAN_PREFERRED_MODEL: &str = "gpt-5.4";
+const GUARDIAN_PREFERRED_MODEL: &str = "codex-auto-review";
 pub(crate) const GUARDIAN_REVIEW_TIMEOUT: Duration = Duration::from_secs(90);
 pub(crate) const GUARDIAN_REVIEWER_NAME: &str = "guardian";
 const GUARDIAN_MAX_MESSAGE_TRANSCRIPT_TOKENS: usize = 10_000;