diff --git a/codex-rs/tui/src/app.rs b/codex-rs/tui/src/app.rs
index 7a87d396f0..5413fb1496 100644
--- a/codex-rs/tui/src/app.rs
+++ b/codex-rs/tui/src/app.rs
@@ -98,7 +98,7 @@ use tokio::sync::mpsc::unbounded_channel;
 use toml::Value as TomlValue;
 
 const EXTERNAL_EDITOR_HINT: &str = "Save and close external editor to continue.";
-const THREAD_EVENT_CHANNEL_CAPACITY: usize = 1024;
+const THREAD_EVENT_CHANNEL_CAPACITY: usize = 32768;
 
 #[derive(Debug, Clone)]
 pub struct AppExitInfo {