diff --git a/src/main.rs b/src/main.rs
index afa6b88..eea1507 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -63,6 +63,7 @@ fn pty_session(t: &mut Activation, local_ds: Arc<Cap>, s: PtySession<AnyValue>)
 
             on_message!(t, local_ds, language(), <pty-input #(&s.id) $body: Chunk>, |_t| {
                 tracing::trace!(?body, "sending to child");
+                // TODO: use async here
                 parent_w.write_all(&body.0[..])?;
                 Ok(())
             });