diff --git a/pubspec.yaml b/pubspec.yaml
index 069bd13..d6fc777 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: xiao_pet_tracker
 description: A Very Good Project created by Very Good CLI.
-version: 1.0.0+3
+version: 1.0.0+4
 publish_to: none
 
 environment:
diff --git a/xiao_controller_code/main.go b/xiao_controller_code/main.go
index 6d4b246..c0705ea 100644
--- a/xiao_controller_code/main.go
+++ b/xiao_controller_code/main.go
@@ -2,7 +2,6 @@ package main
 
 import (
 	"encoding/binary"
-	"fmt"
 	"machine"
 	"time"