diff --git a/codex-rs/tui/Cargo.toml b/codex-rs/tui/Cargo.toml
index be4f5aead7..674cdba607 100644
--- a/codex-rs/tui/Cargo.toml
+++ b/codex-rs/tui/Cargo.toml
@@ -109,4 +109,5 @@ insta = { workspace = true }
 pretty_assertions = { workspace = true }
 rand = { workspace = true }
 serial_test = { workspace = true }
+tokio = { workspace = true, features = ["test-util"] }
 vt100 = { workspace = true }