diff --git a/.gitignore b/.gitignore
index b707151..d2a9cc6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,9 +1,9 @@
 .DS_Store
 .AppleDouble
 .LSOverride
-Icon
-/dist
-/node_modules
+
+package-lock.json
+node_modules/
 
 # Thumbnails
 ._*
diff --git a/index.js b/index.js
index c89cd86..d87b6cd 100644
--- a/index.js
+++ b/index.js
@@ -1,10 +1,9 @@
 /**
  * mysql操作类
- * @authors yutent (yutent@doui.cc)
- * @date    2015-11-24 11:31:55
- *
+ * @author yutent<yutent.io@gmail.com>
+ * @date 2020/11/24 20:04:20
  */
-'use strict'
+
 require('es.shim')
 const mysql = require('mysql')
 const Api = require('./lib/api')
@@ -42,7 +41,7 @@ class Mysqli {
 
       charset = charset || 'utf8mb4'
       collate =
-        charset + (charset === 'utf8mb4' ? '_unicode_ci' : '_general_ci')
+        charset + (charset === 'utf8mb4' ? '_0900_ai_ci' : '_general_ci')
 
       timezone = timezone || 'local'
       supportBigNumbers = !!supportBigNumbers
diff --git a/lib/api.js b/lib/api.js
index e60dccd..5b0e880 100644
--- a/lib/api.js
+++ b/lib/api.js
@@ -1,8 +1,7 @@
 /**
  *
- * @authors yutent (yutent@doui.cc)
- * @date    2018-04-13 14:30:49
- * @version $Id$
+ * @author yutent<yutent.io@gmail.com>
+ * @date 2020/11/24 20:04:39
  */
 
 const { SqlErr, parser, fixtable } = require('./utils')
diff --git a/lib/method.js b/lib/method.js
index f18edfc..5807a09 100644
--- a/lib/method.js
+++ b/lib/method.js
@@ -1,8 +1,7 @@
 /**
  *
- * @authors yutent (yutent@doui.cc)
- * @date    2017-12-14 14:01:03
- * @version $Id$
+ * @author yutent<yutent.io@gmail.com>
+ * @date 2020/11/24 20:04:58
  */
 
 const { SqlErr, parser, escape, fixtable } = require('./utils')
@@ -406,7 +405,9 @@ class Method {
     return this.connect().then(conn => {
       const defer = Promise.defer()
 
-      let sql = `ALTER TABLE ${this.cache.table} ADD ${unique} INDEX \`${name}\` (${opt.field})`
+      let sql = `ALTER TABLE ${
+        this.cache.table
+      } ADD ${unique} INDEX \`${name}\` (${opt.field})`
 
       conn.query(sql, (err, result) => {
         conn.release()
diff --git a/lib/utils.js b/lib/utils.js
index bec2874..e2c079f 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -1,9 +1,9 @@
 /**
  *
- * @authors yutent (yutent@doui.cc)
- * @date    2017-12-14 02:41:15
- * @version $Id$
+ * @author yutent<yutent.io@gmail.com>
+ * @date 2020/11/24 20:07:37
  */
+
 const { escape } = require('mysql')
 
 function hideProperty(host, name, value) {
@@ -275,7 +275,9 @@ const parser = {
           indexes.push(idx)
         }
       }
-      sql += `\`${it.name}\` ${it.type} ${notnull} ${defaultVal} ${inc} ${autoUpdate},\n`
+      sql += `\`${it.name}\` ${
+        it.type
+      } ${notnull} ${defaultVal} ${inc} ${autoUpdate},\n`
     }
     if (!primary) {
       throw new Error('Can not create table without primary key.')
diff --git a/package.json b/package.json
index 689bb03..1dc1dba 100644
--- a/package.json
+++ b/package.json
@@ -1,13 +1,13 @@
 {
   "name": "mysqli",
-  "version": "3.0.11",
+  "version": "3.0.12",
   "description": "MySQL tool",
   "main": "index.js",
   "dependencies": {
-    "es.shim": "^1.1.2",
+    "es.shim": "^2.0.1",
     "mysql": "^2.13.0"
   },
-  "repository": "https://github.com/yutent/mysqli.git",
+  "repository": "https://github.com/bytedo/mysqli.git",
   "author": "yutent",
   "license": "MIT"
 }