diff --git a/material/assets/javascripts/application-de6db8382f.js b/material/assets/javascripts/application-16f434a21a.js
similarity index 89%
rename from material/assets/javascripts/application-de6db8382f.js
rename to material/assets/javascripts/application-16f434a21a.js
index 49b731772..057cdeebe 100644
--- a/material/assets/javascripts/application-de6db8382f.js
+++ b/material/assets/javascripts/application-16f434a21a.js
@@ -5,7 +5,7 @@ var Application=function(t){function e(r){if(n[r])return n[r].exports;var o=n[r]
 	  * @copyright The Financial Times Limited [All Rights Reserved]
 	  * @license MIT License (see LICENSE.txt)
 	  */
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t=this,e=this.el_.getBoundingClientRect().height;e?(this.el_.style.maxHeight=e+"px",requestAnimationFrame(function(){t.el_.setAttribute("data-md-state","animate"),t.el_.style.maxHeight="0px"})):!function(){t.el_.setAttribute("data-md-state","expand"),t.el_.style.maxHeight="";var e=t.el_.getBoundingClientRect().height;t.el_.removeAttribute("data-md-state"),t.el_.style.maxHeight="0px",requestAnimationFrame(function(){t.el_.setAttribute("data-md-state","animate"),t.el_.style.maxHeight=e+"px"})}();var n=function t(e){e.target.removeAttribute("data-md-state"),e.target.style.maxHeight="",e.target.removeEventListener("transitionend",t)};this.el_.addEventListener("transitionend",n,!1)}},{key:"reset",value:function(){this.el_.dataset.mdState="",this.el_.style.maxHeight=""}}]),t}();e.default=o,t.exports=e.default},function(t,e){"use strict";function n(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(e,"__esModule",{value:!0});var r=function(){function t(t,e){for(var n=0;n<e.length;n++){var r=e[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(t,r.key,r)}}return function(e,n,r){return n&&t(e.prototype,n),r&&t(e,r),e}}(),o=function(){function t(e){n(this,t),this.el_="string"==typeof e?document.querySelector(e):e}return r(t,[{key:"setup",value:function(){this.el_.children[1].style.webkitOverflowScrolling="touch";var t=this.el_.querySelectorAll("[data-md-toggle]");Array.prototype.forEach.call(t,function(t){if(t.checked){for(var e=t.nextElementSibling;"NAV"!==e.tagName;)e=e.nextElementSibling;var n=t.parentNode.parentNode,r=e.children[e.children.length-1];n.style.webkitOverflowScrolling="",r.style.webkitOverflowScrolling="touch"}})}},{key:"update",value:function(t){for(var e=t.target.nextElementSibling;"NAV"!==e.tagName;)e=e.nextElementSibling;var 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t=this;this.el_.checked?(this.offset_=window.pageYOffset,setTimeout(function(){window.scrollTo(0,0),t.el_.checked&&(document.body.dataset.mdState="lock")},400)):(document.body.dataset.mdState="",setTimeout(function(){"undefined"!=typeof t.offset_&&window.scrollTo(0,t.offset_)},100))}},{key:"reset",value:function(){"lock"===document.body.dataset.mdState&&window.scrollTo(0,this.offset_),document.body.dataset.mdState=""}}]),t}();e.default=o,t.exports=e.default},function(t,e,n){(function(r){"use strict";function o(t){return t&&t.__esModule?t:{default:t}}function i(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(e,"__esModule",{value:!0});var s=function(){function t(t,e){var n=[],r=!0,o=!1,i=void 0;try{for(var s,a=t[Symbol.iterator]();!(r=(s=a.next()).done)&&(n.push(s.value),!e||n.length!==e);r=!0);}catch(t){o=!0,i=t}finally{try{!r&&a.return&&a.return()}finally{if(o)throw i}}return n}return function(e,n){if(Array.isArray(e))return 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CustomEvent("change"))),e.preventDefault(),setTimeout(function(){document.location.href=t.href},100)})}),this.meta_.textContent=n.length+" search result"+(1!==n.length?"s":"")}}else!function(){var t=function(t){e.index_=(0,c.default)(function(){this.field("title",{boost:10}),this.field("text"),this.ref("location")}),e.data_=t.reduce(function(t,n){return e.index_.add(n),t[n.location]=n,t},{})};setTimeout(function(){return"function"==typeof e.data_?e.data_().then(t):t(e.data_)},250)}()}}]),t}();e.default=l,t.exports=e.default}).call(e,n(81))},function(t,e){"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.default={createElement:function(t,e){var n=document.createElement(t);e&&Array.prototype.forEach.call(Object.keys(e),function(t){n.setAttribute(t,e[t])});for(var r=function t(e){Array.prototype.forEach.call(e,function(e){"string"==typeof e||"number"==typeof e?n.textContent+=e:Array.isArray(e)?t(e):n.appendChild(e)})},o=arguments.length,i=Array(o>2?o-2:0),s=2;s<o;s++)i[s-2]=arguments[s];return r(i),n}},t.exports=e.default},function(t,e,n){var r,o;"function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof Symbol&&t.constructor===Symbol&&t!==Symbol.prototype?"symbol":typeof t};!function(){var i=function t(e){var n=new t.Index;return n.pipeline.add(t.trimmer,t.stopWordFilter,t.stemmer),e&&e.call(n,n),n};i.version="0.7.2",/*!
 	   * lunr.utils
 	   * Copyright (C) 2016 Oliver Nightingale
 	   */
diff --git a/material/base.html b/material/base.html
index f3d6103a8..1d2d05cfd 100644
--- a/material/base.html
+++ b/material/base.html
@@ -105,7 +105,7 @@
       {% endblock %}
     </div>
     {% block scripts %}
-      <script src="{{ base_url }}/assets/javascripts/application-de6db8382f.js"></script>
+      <script src="{{ base_url }}/assets/javascripts/application-16f434a21a.js"></script>
       <script>var config={url:{base:"{{ base_url }}"}},app=new Application(config);app.initialize()</script>
       {% for path in extra_javascript %}
         <script src="{{ path }}"></script>
diff --git a/src/assets/javascripts/components/Material/Nav/Collapse.js b/src/assets/javascripts/components/Material/Nav/Collapse.js
index 07fb23264..922052d0b 100644
--- a/src/assets/javascripts/components/Material/Nav/Collapse.js
+++ b/src/assets/javascripts/components/Material/Nav/Collapse.js
@@ -40,6 +40,10 @@ export default class Collapse {
 
   /**
    * Animate expand and collapse smoothly
+   *
+   * Internet Explorer 11 is very slow at recognizing changes on the dataset
+   * which results in the menu not expanding or collapsing properly. THerefore,
+   * for reasons of compatibility, the attribute accessors are used.
    */
   update() {
     const current = this.el_.getBoundingClientRect().height
@@ -48,34 +52,34 @@ export default class Collapse {
     if (current) {
       this.el_.style.maxHeight = `${current}px`
       requestAnimationFrame(() => {
-        this.el_.dataset.mdState = "animate"
+        this.el_.setAttribute("data-md-state", "animate")
         this.el_.style.maxHeight = "0px"
       })
 
     /* Collapsed, so expand */
     } else {
-      this.el_.dataset.mdState = "expand"
+      this.el_.setAttribute("data-md-state", "expand")
       this.el_.style.maxHeight = ""
 
       /* Read height and unset pseudo-toggled state */
       const height = this.el_.getBoundingClientRect().height
-      this.el_.dataset.mdState = ""
+      this.el_.removeAttribute("data-md-state")
 
       /* Set initial state and animate */
       this.el_.style.maxHeight = "0px"
       requestAnimationFrame(() => {
-        this.el_.dataset.mdState = "animate"
+        this.el_.setAttribute("data-md-state", "animate")
         this.el_.style.maxHeight = `${height}px`
       })
     }
 
     /* Remove state on end of transition */
     const end = ev => {
-      ev.target.dataset.mdState = ""
+      ev.target.removeAttribute("data-md-state")
       ev.target.style.maxHeight = ""
 
       /* Only fire once, so directly remove event listener */
-      ev.target.removeEventListener("transitionend", end, false)
+      ev.target.removeEventListener("transitionend", end)
     }
     this.el_.addEventListener("transitionend", end, false)
   }