diff --git a/core/assets/vendor/domready/ready.js b/core/assets/vendor/domready/ready.js
new file mode 100644
index 0000000..3f05333
--- /dev/null
+++ b/core/assets/vendor/domready/ready.js
@@ -0,0 +1,30 @@
+/*!
+  * domready (c) Dustin Diaz 2014 - License MIT
+  */
+!function (name, definition) {
+
+  if (typeof module != 'undefined') module.exports = definition()
+  else if (typeof define == 'function' && typeof define.amd == 'object') define(definition)
+  else this[name] = definition()
+
+}('domready', function () {
+
+  var fns = [], listener
+    , doc = document
+    , hack = doc.documentElement.doScroll
+    , domContentLoaded = 'DOMContentLoaded'
+    , loaded = (hack ? /^loaded|^c/ : /^loaded|^i|^c/).test(doc.readyState)
+
+
+  if (!loaded)
+  doc.addEventListener(domContentLoaded, listener = function () {
+    doc.removeEventListener(domContentLoaded, listener)
+    loaded = 1
+    while (listener = fns.shift()) listener()
+  })
+
+  return function (fn) {
+    loaded ? setTimeout(fn, 0) : fns.push(fn)
+  }
+
+});
diff --git a/core/assets/vendor/domready/ready.min.js b/core/assets/vendor/domready/ready.min.js
index de84761..1fbe09e 100644
--- a/core/assets/vendor/domready/ready.min.js
+++ b/core/assets/vendor/domready/ready.min.js
@@ -1,4 +1,4 @@
 /*!
   * domready (c) Dustin Diaz 2014 - License MIT
   */
-!function(name,definition){if(typeof module!="undefined")module.exports=definition();else if(typeof define=="function"&&typeof define.amd=="object")define(definition);else this[name]=definition()}("domready",function(){var fns=[],listener,doc=document,hack=doc.documentElement.doScroll,domContentLoaded="DOMContentLoaded",loaded=(hack?/^loaded|^c/:/^loaded|^i|^c/).test(doc.readyState);if(!loaded)doc.addEventListener(domContentLoaded,listener=function(){doc.removeEventListener(domContentLoaded,listener);loaded=1;while(listener=fns.shift())listener()});return function(fn){loaded?fn():fns.push(fn)}});
\ No newline at end of file
+!function(e,t){typeof module!="undefined"?module.exports=t():typeof define=="function"&&typeof define.amd=="object"?define(t):this[e]=t()}("domready",function(){var e=[],t,n=document,r=n.documentElement.doScroll,i="DOMContentLoaded",s=(r?/^loaded|^c/:/^loaded|^i|^c/).test(n.readyState);return s||n.addEventListener(i,t=function(){n.removeEventListener(i,t),s=1;while(t=e.shift())t()}),function(t){s?setTimeout(t,0):e.push(t)}})
\ No newline at end of file
diff --git a/core/core.libraries.yml b/core/core.libraries.yml
index dd8eae7..cf0f37a 100644
--- a/core/core.libraries.yml
+++ b/core/core.libraries.yml
@@ -34,10 +34,10 @@ ckeditor:
 
 domready:
   remote: https://github.com/ded/domready
-  version: "1.0.7"
+  version: "1.0.8"
   license:
     name: MIT
-    url: https://github.com/ded/domready/blob/v1.0.7/LICENSE
+    url: https://github.com/ded/domready/blob/v1.0.8/LICENSE
     gpl-compatible: true
   js:
     assets/vendor/domready/ready.min.js: { weight: -21, minified: true }
diff --git a/core/modules/system/src/Tests/Common/AttachedAssetsTest.php b/core/modules/system/src/Tests/Common/AttachedAssetsTest.php
index 8c9c217..21dc6b2 100644
--- a/core/modules/system/src/Tests/Common/AttachedAssetsTest.php
+++ b/core/modules/system/src/Tests/Common/AttachedAssetsTest.php
@@ -288,7 +288,7 @@ function testVersionQueryString() {
     $js = $this->assetResolver->getJsAssets($assets, FALSE)[1];
     $js_render_array = \Drupal::service('asset.js.collection_renderer')->render($js);
     $rendered_js = $this->renderer->render($js_render_array);
-    $this->assertTrue(strpos($rendered_js, 'core/assets/vendor/backbone/backbone-min.js?v=1.1.2') > 0 && strpos($rendered_js, 'core/assets/vendor/domready/ready.min.js?v=1.0.7') > 0 , 'JavaScript version identifiers correctly appended to URLs');
+    $this->assertTrue(strpos($rendered_js, 'core/assets/vendor/backbone/backbone-min.js?v=1.1.2') > 0 && strpos($rendered_js, 'core/assets/vendor/domready/ready.min.js?v=1.0.8') > 0 , 'JavaScript version identifiers correctly appended to URLs');
   }
 
   /**