diff --git a/dist/hotkeys.js b/dist/hotkeys.js
index 93e6c06..03e3125 100644
--- a/dist/hotkeys.js
+++ b/dist/hotkeys.js
@@ -1,5 +1,5 @@
 /*!
- * hotkeys-js v2.0.8
+ * hotkeys-js v2.0.9
  * A simple micro-library for defining and dispatching keyboard shortcuts. It has no dependencies.
  * 
  * Copyright (c) 2018 kenny wang <wowohoo@qq.com>
diff --git a/dist/hotkeys.min.js b/dist/hotkeys.min.js
index c6c170a..3ac7260 100644
--- a/dist/hotkeys.min.js
+++ b/dist/hotkeys.min.js
@@ -1,3 +1,3 @@
-/*! hotkeys-js v2.0.8 | MIT (c) 2018 kenny wang <wowohoo@qq.com> | https://github.com/jaywcjlove/hotkeys.git */
+/*! hotkeys-js v2.0.9 | MIT (c) 2018 kenny wang <wowohoo@qq.com> | https://github.com/jaywcjlove/hotkeys.git */
 !function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).hotkeys=e()}}(function(){Array.prototype.indexOf||(Array.prototype.indexOf=function(e){for(var n=0;n<this.length;n++)if(this[n]===e)return n;return-1}),Array.prototype.lastIndexOf||(Array.prototype.lastIndexOf=function(e){for(var n=this.length-1;n>=0;n--)if(this[n]===e)return n;return-1});for(var e,n="undefined"!=typeof navigator&&navigator.userAgent.toLowerCase().indexOf("firefox")>0,t={backspace:8,tab:9,clear:12,enter:13,return:13,esc:27,escape:27,space:32,left:37,up:38,right:39,down:40,del:46,delete:46,ins:45,insert:45,home:36,end:35,pageup:33,pagedown:34,"⇪":20,capslock:20,",":188,".":190,"/":191,"`":192,"-":n?173:189,"=":n?61:187,";":n?59:186,"'":222,"[":219,"]":221,"\\":220},o="all",r={"⇧":16,shift:16,"⌥":18,alt:18,option:18,"⌃":17,ctrl:17,control:17,"⌘":n?224:91,cmd:n?224:91,command:n?224:91},i=[],f={16:"shiftKey",18:"altKey",17:"ctrlKey"},a={16:!1,18:!1,17:!1},l={},d=1;d<20;d++)t["f"+d]=111+d;function s(e){return t[e.toLowerCase()]||e.toUpperCase().charCodeAt(0)}function c(e){o=e||"all"}function u(){return o||"all"}function p(e,n,t){e.addEventListener?e.addEventListener(n,t,!1):e.attachEvent&&e.attachEvent("on"+n,function(){t(window.event)})}function h(e,n,t){var o;if(n.scope===t||"all"===n.scope){for(var r in o=n.mods.length>0,a)(!a[r]&&n.mods.indexOf(+r)>-1||a[r]&&-1===n.mods.indexOf(+r))&&(o=!1);(0!==n.mods.length||a[16]||a[18]||a[17]||a[91])&&!o&&"*"!==n.shortcut||!1===n.method(e,n)&&(e.preventDefault?e.preventDefault():e.returnValue=!1,e.stopPropagation&&e.stopPropagation(),e.cancelBubble&&(e.cancelBubble=!0))}}function g(e,n){for(var t=e.length>=n.length?e:n,o=e.length>=n.length?n:e,r=0;r<t.length;r++)if(-1===o.indexOf(t[r]))return!1;return!0}function y(e){for(var n=e.slice(0,e.length-1),t=0;t<n.length;t++)n[t]=r[n[t].toLowerCase()];return n}function v(e){var n,t;for(e||(e=""),t=(n=(e=e.replace(/\s/g,"")).split(",")).lastIndexOf("");t>=0;)n[t-1]+=",",n.splice(t,1),t=n.lastIndexOf("");return n}function w(e,n,t){var o=v(e),r=[],i=0;for(void 0===t&&(t=n,n="all");i<o.length;i++)r=[],(e=o[i].split("+")).length>1&&(r=y(e)),(e="*"===(e=e[e.length-1])?"*":s(e))in l||(l[e]=[]),l[e].push({shortcut:o[i],scope:n,method:t,key:o[i],mods:r})}for(var m in f[n?224:91]="metaKey",a[n?224:91]=!1,"undefined"!=typeof document&&(p(document,"keydown",function(e){!function(e){var n,t=e.keyCode||e.which||e.charCode,o=l["*"];if(-1===i.indexOf(t)&&i.push(t),93!==t&&224!==t||(t=91),t in a){for(var d in a[t]=!0,r)r[d]===t&&(w[d]=!0);if(!o)return}for(var s in a)a[s]=e[f[s]];if(w.filter.call(this,e)){if(n=u(),o)for(c=0;c<o.length;c++)o[c].scope===n&&h(e,o[c],n);if(t in l)for(var c=0;c<l[t].length;c++)h(e,l[t][c],n)}}(e)}),p(document,"keyup",function(e){!function(e){var n=e.keyCode||e.which||e.charCode,t=i.indexOf(n);t>=0&&i.splice(t,1);93!==n&&224!==n||(n=91);if(n in a)for(var o in a[n]=!1,r)r[o]===n&&(w[o]=!1)}(e)})),e={setScope:c,getScope:u,deleteScope:function(e,n){var t,o,r;for(t in e||(e=u()),l)for(o=l[t],r=0;r<o.length;)o[r].scope===e?o.splice(r,1):r++;u()===e&&c(n||"all")},getPressedKeyCodes:function(){return i.slice(0)},isPressed:function(e){return"string"==typeof e&&(e=s(e)),-1!==i.indexOf(e)},filter:function(e){var n=(e.target||e.srcElement).tagName;return!("INPUT"===n||"SELECT"===n||"TEXTAREA"===n)},unbind:function(e,n){for(var t,o,r=v(e),i=[],f=0;f<r.length;f++){if((t=r[f].split("+")).length>1&&(i=y(t)),e="*"===(e=t[t.length-1])?"*":s(e),n||(n=u()),!l[e])return;for(var a=0;a<l[e].length;a++)(o=l[e][a]).scope===n&&g(o.mods,i)&&(l[e][a]={})}}})w[m]=e[m];if("undefined"!=typeof window){var x=window.hotkeys;w.noConflict=function(e){return e&&window.hotkeys===w&&(window.hotkeys=x),w},window.hotkeys=w}return window.hotkeys=w,w});
 
diff --git a/package.json b/package.json
index 00ebb0b..99fe297 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hotkeys-js",
-  "version": "2.0.8",
+  "version": "2.0.9",
   "description": "A simple micro-library for defining and dispatching keyboard shortcuts. It has no dependencies.",
   "author": "kenny wang <wowohoo@qq.com>",
   "main": "dist/hotkeys.min.js",