diff --git a/.gitignore b/.gitignore
index 657be65..a2ec548 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 .DS_Store
 *.log
 node_modules/*
+package-lock.json
diff --git a/README.md b/README.md
index 56c1a1f..0ea411d 100644
--- a/README.md
+++ b/README.md
@@ -178,6 +178,7 @@ These are the supported options and their default values:
 
 ```js
 $.modal.defaults = {
+  backgroundBlock: true,  // Block site behid. Set this to false if you need scroll your site behind
   closeExisting: true,    // Close existing modals. Set this to false if you need to stack multiple modal instances.
   escapeClose: true,      // Allows the user to close the modal by pressing `ESC`
   clickClose: true,       // Allows the user to close the modal by clicking the overlay
diff --git a/jquery.modal.js b/jquery.modal.js
index 7e62a4d..9787382 100644
--- a/jquery.modal.js
+++ b/jquery.modal.js
@@ -114,7 +114,9 @@
 
     block: function() {
       this.$elm.trigger($.modal.BEFORE_BLOCK, [this._ctx()]);
-      this.$body.css('overflow','hidden');
+      if(this.options.backgroundBlock) {
+        this.$body.css('overflow','hidden');
+      }
       this.$blocker = $('<div class="' + this.options.blockerClass + ' blocker current"></div>').appendTo(this.$body);
       selectCurrent();
       if(this.options.doFade) {
@@ -201,6 +203,7 @@
   $.modal.getCurrent = getCurrent;
 
   $.modal.defaults = {
+    backgroundBlock: true,
     closeExisting: true,
     escapeClose: true,
     clickClose: true,
diff --git a/jquery.modal.min.js b/jquery.modal.min.js
index 34eecf6..03f643a 100644
--- a/jquery.modal.min.js
+++ b/jquery.modal.min.js
@@ -2,4 +2,4 @@
     A simple jQuery modal (http://github.com/kylefox/jquery-modal)
     Version 0.9.2
 */
-!function(o){"object"==typeof module&&"object"==typeof module.exports?o(require("jquery"),window,document):o(jQuery,window,document)}(function(o,t,i,e){var s=[],l=function(){return s.length?s[s.length-1]:null},n=function(){var o,t=!1;for(o=s.length-1;o>=0;o--)s[o].$blocker&&(s[o].$blocker.toggleClass("current",!t).toggleClass("behind",t),t=!0)};o.modal=function(t,i){var e,n;if(this.$body=o("body"),this.options=o.extend({},o.modal.defaults,i),this.options.doFade=!isNaN(parseInt(this.options.fadeDuration,10)),this.$blocker=null,this.options.closeExisting)for(;o.modal.isActive();)o.modal.close();if(s.push(this),t.is("a"))if(n=t.attr("href"),this.anchor=t,/^#/.test(n)){if(this.$elm=o(n),1!==this.$elm.length)return null;this.$body.append(this.$elm),this.open()}else this.$elm=o("<div>"),this.$body.append(this.$elm),e=function(o,t){t.elm.remove()},this.showSpinner(),t.trigger(o.modal.AJAX_SEND),o.get(n).done(function(i){if(o.modal.isActive()){t.trigger(o.modal.AJAX_SUCCESS);var s=l();s.$elm.empty().append(i).on(o.modal.CLOSE,e),s.hideSpinner(),s.open(),t.trigger(o.modal.AJAX_COMPLETE)}}).fail(function(){t.trigger(o.modal.AJAX_FAIL);var i=l();i.hideSpinner(),s.pop(),t.trigger(o.modal.AJAX_COMPLETE)});else this.$elm=t,this.anchor=t,this.$body.append(this.$elm),this.open()},o.modal.prototype={constructor:o.modal,open:function(){var t=this;this.block(),this.anchor.blur(),this.options.doFade?setTimeout(function(){t.show()},this.options.fadeDuration*this.options.fadeDelay):this.show(),o(i).off("keydown.modal").on("keydown.modal",function(o){var t=l();27===o.which&&t.options.escapeClose&&t.close()}),this.options.clickClose&&this.$blocker.click(function(t){t.target===this&&o.modal.close()})},close:function(){s.pop(),this.unblock(),this.hide(),o.modal.isActive()||o(i).off("keydown.modal")},block:function(){this.$elm.trigger(o.modal.BEFORE_BLOCK,[this._ctx()]),this.$body.css("overflow","hidden"),this.$blocker=o('<div class="'+this.options.blockerClass+' blocker current"></div>').appendTo(this.$body),n(),this.options.doFade&&this.$blocker.css("opacity",0).animate({opacity:1},this.options.fadeDuration),this.$elm.trigger(o.modal.BLOCK,[this._ctx()])},unblock:function(t){!t&&this.options.doFade?this.$blocker.fadeOut(this.options.fadeDuration,this.unblock.bind(this,!0)):(this.$blocker.children().appendTo(this.$body),this.$blocker.remove(),this.$blocker=null,n(),o.modal.isActive()||this.$body.css("overflow",""))},show:function(){this.$elm.trigger(o.modal.BEFORE_OPEN,[this._ctx()]),this.options.showClose&&(this.closeButton=o('<a href="#close-modal" rel="modal:close" class="close-modal '+this.options.closeClass+'">'+this.options.closeText+"</a>"),this.$elm.append(this.closeButton)),this.$elm.addClass(this.options.modalClass).appendTo(this.$blocker),this.options.doFade?this.$elm.css({opacity:0,display:"inline-block"}).animate({opacity:1},this.options.fadeDuration):this.$elm.css("display","inline-block"),this.$elm.trigger(o.modal.OPEN,[this._ctx()])},hide:function(){this.$elm.trigger(o.modal.BEFORE_CLOSE,[this._ctx()]),this.closeButton&&this.closeButton.remove();var t=this;this.options.doFade?this.$elm.fadeOut(this.options.fadeDuration,function(){t.$elm.trigger(o.modal.AFTER_CLOSE,[t._ctx()])}):this.$elm.hide(0,function(){t.$elm.trigger(o.modal.AFTER_CLOSE,[t._ctx()])}),this.$elm.trigger(o.modal.CLOSE,[this._ctx()])},showSpinner:function(){this.options.showSpinner&&(this.spinner=this.spinner||o('<div class="'+this.options.modalClass+'-spinner"></div>').append(this.options.spinnerHtml),this.$body.append(this.spinner),this.spinner.show())},hideSpinner:function(){this.spinner&&this.spinner.remove()},_ctx:function(){return{elm:this.$elm,$elm:this.$elm,$blocker:this.$blocker,options:this.options,$anchor:this.anchor}}},o.modal.close=function(t){if(o.modal.isActive()){t&&t.preventDefault();var i=l();return i.close(),i.$elm}},o.modal.isActive=function(){return s.length>0},o.modal.getCurrent=l,o.modal.defaults={closeExisting:!0,escapeClose:!0,clickClose:!0,closeText:"Close",closeClass:"",modalClass:"modal",blockerClass:"jquery-modal",spinnerHtml:'<div class="rect1"></div><div class="rect2"></div><div class="rect3"></div><div class="rect4"></div>',showSpinner:!0,showClose:!0,fadeDuration:null,fadeDelay:1},o.modal.BEFORE_BLOCK="modal:before-block",o.modal.BLOCK="modal:block",o.modal.BEFORE_OPEN="modal:before-open",o.modal.OPEN="modal:open",o.modal.BEFORE_CLOSE="modal:before-close",o.modal.CLOSE="modal:close",o.modal.AFTER_CLOSE="modal:after-close",o.modal.AJAX_SEND="modal:ajax:send",o.modal.AJAX_SUCCESS="modal:ajax:success",o.modal.AJAX_FAIL="modal:ajax:fail",o.modal.AJAX_COMPLETE="modal:ajax:complete",o.fn.modal=function(t){return 1===this.length&&new o.modal(this,t),this},o(i).on("click.modal",'a[rel~="modal:close"]',o.modal.close),o(i).on("click.modal",'a[rel~="modal:open"]',function(t){t.preventDefault(),o(this).modal()})});
+!function(o){"object"==typeof module&&"object"==typeof module.exports?o(require("jquery"),window,document):o(jQuery,window,document)}(function(o,t,i,e){var s=[],l=function(){return s.length?s[s.length-1]:null},n=function(){var o,t=!1;for(o=s.length-1;o>=0;o--)s[o].$blocker&&(s[o].$blocker.toggleClass("current",!t).toggleClass("behind",t),t=!0)};o.modal=function(t,i){var e,n;if(this.$body=o("body"),this.options=o.extend({},o.modal.defaults,i),this.options.doFade=!isNaN(parseInt(this.options.fadeDuration,10)),this.$blocker=null,this.options.closeExisting)for(;o.modal.isActive();)o.modal.close();if(s.push(this),t.is("a"))if(n=t.attr("href"),this.anchor=t,/^#/.test(n)){if(this.$elm=o(n),1!==this.$elm.length)return null;this.$body.append(this.$elm),this.open()}else this.$elm=o("<div>"),this.$body.append(this.$elm),e=function(o,t){t.elm.remove()},this.showSpinner(),t.trigger(o.modal.AJAX_SEND),o.get(n).done(function(i){if(o.modal.isActive()){t.trigger(o.modal.AJAX_SUCCESS);var s=l();s.$elm.empty().append(i).on(o.modal.CLOSE,e),s.hideSpinner(),s.open(),t.trigger(o.modal.AJAX_COMPLETE)}}).fail(function(){t.trigger(o.modal.AJAX_FAIL);var i=l();i.hideSpinner(),s.pop(),t.trigger(o.modal.AJAX_COMPLETE)});else this.$elm=t,this.anchor=t,this.$body.append(this.$elm),this.open()},o.modal.prototype={constructor:o.modal,open:function(){var t=this;this.block(),this.anchor.blur(),this.options.doFade?setTimeout(function(){t.show()},this.options.fadeDuration*this.options.fadeDelay):this.show(),o(i).off("keydown.modal").on("keydown.modal",function(o){var t=l();27===o.which&&t.options.escapeClose&&t.close()}),this.options.clickClose&&this.$blocker.click(function(t){t.target===this&&o.modal.close()})},close:function(){s.pop(),this.unblock(),this.hide(),o.modal.isActive()||o(i).off("keydown.modal")},block:function(){this.$elm.trigger(o.modal.BEFORE_BLOCK,[this._ctx()]),this.options.backgroundBlock&&this.$body.css("overflow","hidden"),this.$blocker=o('<div class="'+this.options.blockerClass+' blocker current"></div>').appendTo(this.$body),n(),this.options.doFade&&this.$blocker.css("opacity",0).animate({opacity:1},this.options.fadeDuration),this.$elm.trigger(o.modal.BLOCK,[this._ctx()])},unblock:function(t){!t&&this.options.doFade?this.$blocker.fadeOut(this.options.fadeDuration,this.unblock.bind(this,!0)):(this.$blocker.children().appendTo(this.$body),this.$blocker.remove(),this.$blocker=null,n(),o.modal.isActive()||this.$body.css("overflow",""))},show:function(){this.$elm.trigger(o.modal.BEFORE_OPEN,[this._ctx()]),this.options.showClose&&(this.closeButton=o('<a href="#close-modal" rel="modal:close" class="close-modal '+this.options.closeClass+'">'+this.options.closeText+"</a>"),this.$elm.append(this.closeButton)),this.$elm.addClass(this.options.modalClass).appendTo(this.$blocker),this.options.doFade?this.$elm.css({opacity:0,display:"inline-block"}).animate({opacity:1},this.options.fadeDuration):this.$elm.css("display","inline-block"),this.$elm.trigger(o.modal.OPEN,[this._ctx()])},hide:function(){this.$elm.trigger(o.modal.BEFORE_CLOSE,[this._ctx()]),this.closeButton&&this.closeButton.remove();var t=this;this.options.doFade?this.$elm.fadeOut(this.options.fadeDuration,function(){t.$elm.trigger(o.modal.AFTER_CLOSE,[t._ctx()])}):this.$elm.hide(0,function(){t.$elm.trigger(o.modal.AFTER_CLOSE,[t._ctx()])}),this.$elm.trigger(o.modal.CLOSE,[this._ctx()])},showSpinner:function(){this.options.showSpinner&&(this.spinner=this.spinner||o('<div class="'+this.options.modalClass+'-spinner"></div>').append(this.options.spinnerHtml),this.$body.append(this.spinner),this.spinner.show())},hideSpinner:function(){this.spinner&&this.spinner.remove()},_ctx:function(){return{elm:this.$elm,$elm:this.$elm,$blocker:this.$blocker,options:this.options,$anchor:this.anchor}}},o.modal.close=function(t){if(o.modal.isActive()){t&&t.preventDefault();var i=l();return i.close(),i.$elm}},o.modal.isActive=function(){return s.length>0},o.modal.getCurrent=l,o.modal.defaults={backgroundBlock:!0,closeExisting:!0,escapeClose:!0,clickClose:!0,closeText:"Close",closeClass:"",modalClass:"modal",blockerClass:"jquery-modal",spinnerHtml:'<div class="rect1"></div><div class="rect2"></div><div class="rect3"></div><div class="rect4"></div>',showSpinner:!0,showClose:!0,fadeDuration:null,fadeDelay:1},o.modal.BEFORE_BLOCK="modal:before-block",o.modal.BLOCK="modal:block",o.modal.BEFORE_OPEN="modal:before-open",o.modal.OPEN="modal:open",o.modal.BEFORE_CLOSE="modal:before-close",o.modal.CLOSE="modal:close",o.modal.AFTER_CLOSE="modal:after-close",o.modal.AJAX_SEND="modal:ajax:send",o.modal.AJAX_SUCCESS="modal:ajax:success",o.modal.AJAX_FAIL="modal:ajax:fail",o.modal.AJAX_COMPLETE="modal:ajax:complete",o.fn.modal=function(t){return 1===this.length&&new o.modal(this,t),this},o(i).on("click.modal",'a[rel~="modal:close"]',o.modal.close),o(i).on("click.modal",'a[rel~="modal:open"]',function(t){t.preventDefault(),o(this).modal()})});
\ No newline at end of file
diff --git a/package.json b/package.json
index 92ebecf..4212079 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
   "license": "MIT",
   "author": "Kyle Fox <kylefox@gmail.com> (http://kylefox.ca/)",
   "devDependencies": {
-    "gulp": "^3.9.0",
+    "gulp": "^4.0.0",
     "gulp-conventional-changelog": "^0.7.0",
     "gulp-rename": "^1.2.2",
     "gulp-uglify": "^1.4.1",