diff --git a/helper/version.md b/helper/version.md
index a11d2c5..1161844 100644
--- a/helper/version.md
+++ b/helper/version.md
@@ -34,4 +34,8 @@
 1. 修复firefox和qq浏览器下无效的问题
 2. 启用 disableMenu 配置
 3. 去除内部debug逻辑
-4. 增加默认跳转的404页面
\ No newline at end of file
+4. 增加默认跳转的404页面
+   
+## 0.1.1
+1. 增加history.back 之后跳转默认页的延迟
+2. 优化ondeltoolopen 逻辑
\ No newline at end of file
diff --git a/index.html b/index.html
index b8f5bd2..8ba838b 100644
--- a/index.html
+++ b/index.html
@@ -178,7 +178,7 @@ disableDevtool(options);</code></p>
     <script 
         disable-devtool-auto 
         md5='1aabac6d068eef6a7bad3fdf50a05cc8' 
-        src='https://cdn.jsdelivr.net/npm/disable-devtool@0.1.0/disable-devtool.min.js#use'
+        src='https://cdn.jsdelivr.net/npm/disable-devtool@0.1.1/disable-devtool.min.js#use'
     ></script>
     <!-- <script disable-devtool-auto md5='1aabac6d068eef6a7bad3fdf50a05cc8' src='./npm/disable-devtool.min.js'></script> -->
     <script>
diff --git a/npm/disable-devtool.min.js b/npm/disable-devtool.min.js
index 85ef5ac..6afe54b 100644
--- a/npm/disable-devtool.min.js
+++ b/npm/disable-devtool.min.js
@@ -1 +1 @@
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i&&e-i<100?t():i=e,""}}else e?(t=/./,console.log(t),t.toString=function(){return g().next(),""}):(t=new Image).__defineGetter__("id",(function(){g().next()}));u=function(){console.log(t),console.clear()},f.push(u);var u}())}b.md5=y,b.version="0.1.1";var h=!1;function g(){var n=(new Date).getTime();return console.log("You ar not allow to use DEVTOOL!",n),h?{time:n,next:function(){}}:(o()||(h=!0),{time:n,next:function(){h=!0,window.clearTimeout(a),u.ondevtoolopen()}})}!function(){var n=document.querySelector("[disable-devtool-auto]");if(n){var e={};["md5","url","tk-name","interval","disable-menu"].forEach((function(t){var o=n.getAttribute(t);null!==o&&("interval"===t?o=parseInt(o):"disable-menu"===t&&(o="false"!==o),e[function(n){if(-1===n.indexOf("-"))return n;var e=!1;return n.split("").map((function(n){return"-"===n?(e=!0,""):e?(e=!1,n.toUpperCase()):n})).join("")}(t)]=o)})),b(e)}}();e.default=b}]).default}));
\ No newline at end of file
diff --git a/npm/package.json b/npm/package.json
index 71f3532..1cf1dbd 100644
--- a/npm/package.json
+++ b/npm/package.json
@@ -1,10 +1,8 @@
 {
     "name": "disable-devtool",
-    "version": "0.1.0",
+    "version": "0.1.1",
     "description": "Disable web developer tools from the f12 button, right-click and browser ",
     "main": "disable-devtool.min.js",
-    "scripts": {
-    },
     "unpkg": "disable-devtool.min.js",
     "jsdelivr": "disable-devtool.min.js",
     "typings": "index.d.ts",
diff --git a/package.json b/package.json
index 4dcc3fb..9909370 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "disable-devtool",
-    "version": "0.1.0",
+    "version": "0.1.1",
     "description": "Disable web developer tools from the f12 button, right-click and browser ",
     "main": "disable-devtool.min.js",
     "unpkg": "disable-devtool.min.js",
diff --git a/src/main.js b/src/main.js
index 418d493..6b9879a 100644
--- a/src/main.js
+++ b/src/main.js
@@ -20,11 +20,12 @@ let hasOpened = false;
 export function onDevToolOpen () {
     let time = new Date().getTime();
     console.log('You ar not allow to use DEVTOOL!', time);
+    if (hasOpened) {return {time, next () {}};}
     if (!isQQBrowser()) {
-        if (hasOpened) {return {time, next () {}};}
         hasOpened = true;
     }
     return {time, next () {
+        hasOpened = true;
         clearTimeout();
         config.ondevtoolopen();
     }};
diff --git a/src/util.js b/src/util.js
index 3529156..9e4101c 100644
--- a/src/util.js
+++ b/src/util.js
@@ -9,13 +9,17 @@ export function closeWindow () {
     if (config.url) {
         window.location.href = config.url;
     } else {
-        window.opener = null;
-        window.open('', '_self');
-        window.close();
-        window.history.back();
+        try {
+            window.opener = null;
+            window.open('', '_self');
+            window.close();
+            window.history.back();
+        } catch (e) {
+            console.log(e);
+        }
         setTimeout(() => {
             window.location.href = `https://tackchen.gitee.io/404.html?h=${encodeURIComponent(location.host)}`;
-        }, 100);
+        }, 500);
     }
     // 否则执行跳转到 url
 }
diff --git a/src/version.js b/src/version.js
index cbec741..94e9ac6 100644
--- a/src/version.js
+++ b/src/version.js
@@ -1 +1 @@
-export default '0.1.0';
\ No newline at end of file
+export default '0.1.1';
\ No newline at end of file