diff --git a/crates/workflow-runner/src/main.rs b/crates/workflow-runner/src/main.rs
index 5936f44..301868e 100644
--- a/crates/workflow-runner/src/main.rs
+++ b/crates/workflow-runner/src/main.rs
@@ -696,7 +696,8 @@ async fn run_step(workdir: &str, step: &WorkflowStep, idx: usize, total: usize)
     let mut child = cmd.spawn().into_diagnostic()?;
 
     // Stream output with step fields; use per-step category for both stdout and stderr
-    let extra = serde_json::json!({"step_name": step.name, "step_index": idx, "total_steps": total});
+    let extra =
+        serde_json::json!({"step_name": step.name, "step_index": idx, "total_steps": total});
     let step_cat_clone_out = step_category.clone();
     if let Some(stdout) = child.stdout.take() {
         let mut reader = BufReader::new(stdout);