diff --git a/docusaurus.config.js b/docusaurus.config.js
index 5344d32216..42e58acd74 100644
--- a/docusaurus.config.js
+++ b/docusaurus.config.js
@@ -4,7 +4,6 @@ module.exports = {
   url: 'https://your-docusaurus-test-site.com',
   baseUrl: '/',
   onBrokenLinks: 'throw',
-  onBrokenMarkdownLinks: 'warn',
   favicon: 'img/favicon.ico',
   organizationName: 'facebook', // Usually your GitHub org/user name.
   projectName: 'docusaurus', // Usually your repo name.
diff --git a/package.json b/package.json
index 9aa82b5eef..90dd360cc0 100644
--- a/package.json
+++ b/package.json
@@ -9,20 +9,19 @@
     "swizzle": "docusaurus swizzle",
     "deploy": "docusaurus deploy",
     "serve": "docusaurus serve",
-    "clear": "docusaurus clear",
     "dev": "docusaurus start"
   },
   "dependencies": {
     "@docusaurus/core": "2.0.0-alpha.66",
     "@docusaurus/preset-classic": "2.0.0-alpha.66",
-    "@mdx-js/react": "^1.6.21",
+    "@mdx-js/react": "^1.5.8",
     "clsx": "^1.1.1",
     "react": "^16.8.4",
     "react-dom": "^16.8.4"
   },
   "browserslist": {
     "production": [
-      ">0.5%",
+      ">0.2%",
       "not dead",
       "not op_mini all"
     ],
diff --git a/yarn.lock b/yarn.lock
index 8b86d3b4f1..2ebfa08a6f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1537,7 +1537,7 @@
     unist-builder "2.0.3"
     unist-util-visit "2.0.3"
 
-"@mdx-js/react@^1.5.8", "@mdx-js/react@^1.6.21":
+"@mdx-js/react@^1.5.8":
   version "1.6.21"
   resolved "https://registry.yarnpkg.com/@mdx-js/react/-/react-1.6.21.tgz#86d962471a5e160c59a6b32054aa55c0c7ca404e"
   integrity sha512-CgSNT9sq2LAlhEbVlPg7DwUQkypz+CWaWGcJbkgmp9WCAy6vW33CQ44UbKPiH3wet9o+UbXeQOqzZd041va83g==