diff --git a/env.docker.py.example b/env.docker.py.example
index 15a707f..ee57be7 100644
--- a/env.docker.py.example
+++ b/env.docker.py.example
@@ -1,4 +1,4 @@
-# encoding=utf8
+# -*- coding: utf-8 -*-
 
 # 12306 账号
 USER_ACCOUNTS = [
diff --git a/env.py.example b/env.py.example
index eff2219..af416fd 100644
--- a/env.py.example
+++ b/env.py.example
@@ -1,4 +1,4 @@
-# encoding=utf8
+# -*- coding: utf-8 -*-
 
 # 12306 账号
 USER_ACCOUNTS = [
diff --git a/env.slave.py.example b/env.slave.py.example
index 2352dec..1977a2a 100644
--- a/env.slave.py.example
+++ b/env.slave.py.example
@@ -1,4 +1,4 @@
-# encoding=utf8
+# -*- coding: utf-8 -*-
 # 分布式子节点配置文件示例
 
 # 分布式集群配置
diff --git a/main.py b/main.py
index f5fbe25..13f2c26 100644
--- a/main.py
+++ b/main.py
@@ -1,4 +1,4 @@
-# encoding=utf8
+# -*- coding: utf-8 -*-
 import sys
 
 from py12306.app import *