diff --git a/package.json b/package.json
index 3a28ac4d..46ec0868 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "flux": "^3.1.3",
     "jquery": "^3.4.0",
     "jquery-ui": "^1.12.1",
-    "markdown": "^0.5.0",
+    "marked": "^1.0.0",
     "prop-types": "^15.7.2",
     "q": "^1.5.1",
     "raphael": "^2.1.0",
diff --git a/src/js/util/debug.js b/src/js/util/debug.js
index a9359f1d..227e6113 100644
--- a/src/js/util/debug.js
+++ b/src/js/util/debug.js
@@ -30,7 +30,7 @@ var toGlobalize = {
   Level: require('../level'),
   Sandbox: require('../sandbox/'),
   GitDemonstrationView: require('../views/gitDemonstrationView'),
-  Markdown: require('markdown'),
+  Markdown: require('marked'),
   LevelDropdownView: require('../views/levelDropdownView'),
   BuilderViews: require('../views/builderViews'),
   Util: require('../util/index'),
@@ -59,4 +59,3 @@ $(document).ready(function() {
     return toGlobalize.Main.getSandbox().mainVis.gitEngine.printAndCopyTree();
   };
 });
-
diff --git a/src/js/views/builderViews.js b/src/js/views/builderViews.js
index 592e1975..c3931519 100644
--- a/src/js/views/builderViews.js
+++ b/src/js/views/builderViews.js
@@ -1,5 +1,6 @@
 var _ = require('underscore');
 var Q = require('q');
+var marked = require('marked');
 
 var Views = require('../views');
 var throttle = require('../util/throttle');
@@ -122,7 +123,7 @@ var MarkdownGrabber = ContainedBase.extend({
 
   updatePreview: function() {
     var raw = this.getRawText();
-    var HTML = require('markdown').markdown.toHTML(raw);
+    var HTML = marked(raw);
     this.$('div.insidePreview').html(HTML);
   }
 });
diff --git a/src/js/views/gitDemonstrationView.js b/src/js/views/gitDemonstrationView.js
index fc1da36d..65a841e7 100644
--- a/src/js/views/gitDemonstrationView.js
+++ b/src/js/views/gitDemonstrationView.js
@@ -1,6 +1,7 @@
 var _ = require('underscore');
 var Q = require('q');
 var Backbone = require('backbone');
+var marked = require('marked');
 
 var util = require('../util');
 var intl = require('../intl');
@@ -43,7 +44,7 @@ var GitDemonstrationView = ContainedBase.extend({
     );
 
     var convert = function(markdowns) {
-      return require('markdown').markdown.toHTML(markdowns.join('\n'));
+      return marked(markdowns.join('\n'));
     };
 
     this.JSON.beforeHTML = convert(this.JSON.beforeMarkdowns);
diff --git a/src/js/views/index.js b/src/js/views/index.js
index e5c79b12..ab825f28 100644
--- a/src/js/views/index.js
+++ b/src/js/views/index.js
@@ -1,6 +1,7 @@
 var _ = require('underscore');
 var Q = require('q');
 var Backbone = require('backbone');
+var marked = require('marked');
 
 var Main = require('../app');
 var intl = require('../intl');
@@ -356,7 +357,7 @@ var ModalAlert = ContainedBase.extend({
 
   render: function() {
     var HTML = (this.JSON.markdown) ?
-      require('markdown').markdown.toHTML(this.JSON.markdown) :
+      marked(this.JSON.markdown) :
       this.template(this.JSON);
     // one more hack -- allow adding custom random HTML if specified
     if (this.options._dangerouslyInsertHTML) {
diff --git a/yarn.lock b/yarn.lock
index 4d1979a2..42281e10 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -202,11 +202,6 @@ JSONStream@^1.0.3:
     jsonparse "^1.2.0"
     through ">=2.2.7 <3"
 
-abbrev@1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
-  integrity sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==
-
 acorn-node@^1.2.0, acorn-node@^1.3.0, acorn-node@^1.5.2, acorn-node@^1.6.1:
   version "1.8.2"
   resolved "https://registry.yarnpkg.com/acorn-node/-/acorn-node-1.8.2.tgz#114c95d64539e53dede23de8b9d96df7c7ae2af8"
@@ -3065,12 +3060,10 @@ map-visit@^1.0.0:
   dependencies:
     object-visit "^1.0.0"
 
-markdown@^0.5.0:
-  version "0.5.0"
-  resolved "https://registry.yarnpkg.com/markdown/-/markdown-0.5.0.tgz#28205b565a8ae7592de207463d6637dc182722b2"
-  integrity sha1-KCBbVlqK51kt4gdGPWY33BgnIrI=
-  dependencies:
-    nopt "~2.1.1"
+marked@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/marked/-/marked-1.0.0.tgz#d35784245a04871e5988a491e28867362e941693"
+  integrity sha512-Wo+L1pWTVibfrSr+TTtMuiMfNzmZWiOPeO7rZsQUY5bgsxpHesBEcIWJloWVTFnrMXnf/TL30eTFSGJddmQAng==
 
 matchdep@^2.0.0:
   version "2.0.0"
@@ -3305,13 +3298,6 @@ node-fetch@^1.0.1:
     encoding "^0.1.11"
     is-stream "^1.0.1"
 
-nopt@~2.1.1:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/nopt/-/nopt-2.1.2.tgz#6cccd977b80132a07731d6e8ce58c2c8303cf9af"
-  integrity sha1-bMzZd7gBMqB3MdbozljCyDA8+a8=
-  dependencies:
-    abbrev "1"
-
 normalize-package-data@^2.3.2, normalize-package-data@^2.3.4:
   version "2.5.0"
   resolved "https://registry.yarnpkg.com/normalize-package-data/-/normalize-package-data-2.5.0.tgz#e66db1838b200c1dfc233225d12cb36520e234a8"