diff --git a/src/serial.rs b/src/serial.rs
index 55fde7caf36d43d06f520766eca9fdb1bcc3439f..ed8dd01d2aeed334fd14ff16916e1e7d721efcba 100644
--- a/src/serial.rs
+++ b/src/serial.rs
@@ -3,7 +3,7 @@ use std::{
     ops::Deref,
     sync::Arc,
     thread::{self, JoinHandle},
-    time::{Duration, Instant},
+    time::Duration,
 };
 
 use crossbeam_channel::{unbounded, Receiver, RecvTimeoutError, Sender};