diff --git a/codex-rs/app-server/src/lib.rs b/codex-rs/app-server/src/lib.rs
index 4013bbe76b..8757d9eb71 100644
--- a/codex-rs/app-server/src/lib.rs
+++ b/codex-rs/app-server/src/lib.rs
@@ -585,6 +585,8 @@ pub async fn run_main_with_transport_options(
     let stderr_fmt: StderrLogLayer = match log_format_from_env() {
         LogFormat::Json => tracing_subscriber::fmt::layer()
             .json()
+            .with_current_span(true)
+            .with_span_list(true)
             .with_writer(std::io::stderr)
             .with_span_events(tracing_subscriber::fmt::format::FmtSpan::FULL)
             .with_filter(EnvFilter::from_default_env())