diff --git a/package.json b/package.json
index 99826f4..35d1688 100644
--- a/package.json
+++ b/package.json
@@ -8,8 +8,8 @@
     "build-chrome": "cross-env TARGET=chrome node utils/build.js",
     "build-firefox": "cross-env TARGET=firefox node utils/build.js",
     "start": "yarn start-chrome",
-    "start-chrome": "cross-env NODE_ENV=development TARGET=chrome node utils/start.js",
-    "start-firefox": "cross-env NODE_ENV=development TARGET=firefox node utils/start.js",
+    "start-chrome": "cross-env NODE_OPTIONS='--openssl-legacy-provider' NODE_ENV=development TARGET=chrome node utils/start.js",
+    "start-firefox": "cross-env NODE_OPTIONS='--openssl-legacy-provider' NODE_ENV=development TARGET=firefox node utils/start.js",
     "standard": "standard",
     "test": "jest --watch",
     "test-ci": "jest"
@@ -44,7 +44,7 @@
     "write-file-webpack-plugin": "^4.5.1"
   },
   "devDependencies": {
-    "cross-env": "^5.2.0",
+    "cross-env": "^7.0.3",
     "husky": "^0.13.4",
     "jest": "^27.0.6",
     "sanitize-html": "^2.3.2",
diff --git a/src/js/index.jsx b/src/js/index.jsx
index d4123eb..8842202 100644
--- a/src/js/index.jsx
+++ b/src/js/index.jsx
@@ -7,14 +7,24 @@ import './style.css'
 
 const { document, MutationObserver, FontFace, parseInt = Number.parseInt } = window
 
-let observer
-const observe = () => {
-  observer && observer.disconnect()
-  const pjaxContainer = document.querySelector('[data-pjax-container]')
-  const pjaxContentContainer = document.querySelector('#repo-content-pjax-container')
-  observer = new MutationObserver(start)
-  pjaxContainer && observer.observe(pjaxContainer, { childList: true })
-  pjaxContentContainer && observer.observe(pjaxContentContainer, { childList: true })
+function waitForElm (selector) {
+  return new Promise(resolve => {
+    if (document.querySelector(selector)) {
+      return resolve(document.querySelector(selector))
+    }
+
+    const observer = new MutationObserver(mutations => {
+      if (document.querySelector(selector)) {
+        resolve(document.querySelector(selector))
+        observer.disconnect()
+      }
+    })
+
+    observer.observe(document.body, {
+      childList: true,
+      subtree: true
+    })
+  })
 }
 
 class Top extends React.Component {
@@ -29,7 +39,7 @@ class Top extends React.Component {
     this.calculateTree()
   }
 
-  loadTree() {
+  loadTree () {
     const { tree } = createFileTree()
     this.setState({ tree })
   }
@@ -93,11 +103,8 @@ const loadFonts = () => {
     })
 }
 
-const start = () => {
-  observe()
-  renderTree()
-}
-
 loadFonts()
-observe()
-start()
+renderTree()
+waitForElm('#files_tab_counter').then(() => {
+  renderTree()
+})
diff --git a/yarn.lock b/yarn.lock
index bc8bc38..3ba03b0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2726,14 +2726,14 @@ create-error-class@^3.0.0:
   dependencies:
     capture-stack-trace "^1.0.0"
 
-cross-env@^5.2.0:
-  version "5.2.1"
-  resolved "https://registry.yarnpkg.com/cross-env/-/cross-env-5.2.1.tgz#b2c76c1ca7add66dc874d11798466094f551b34d"
-  integrity sha512-1yHhtcfAd1r4nwQgknowuUNfIT9E8dOMMspC36g45dN+iD1blloi7xp8X/xAIDnjHWyt1uQ8PHk2fkNaym7soQ==
+cross-env@^7.0.3:
+  version "7.0.3"
+  resolved "https://registry.yarnpkg.com/cross-env/-/cross-env-7.0.3.tgz#865264b29677dc015ba8418918965dd232fc54cf"
+  integrity sha512-+/HKd6EgcQCJGh2PSjZuUitQBQynKor4wrFbRg4DtAgS1aWO+gU52xpH7M9ScGgXSYmAVS9bIJ8EzuaGw0oNAw==
   dependencies:
-    cross-spawn "^6.0.5"
+    cross-spawn "^7.0.1"
 
-cross-spawn@^6.0.0, cross-spawn@^6.0.5:
+cross-spawn@^6.0.0:
   version "6.0.5"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
   integrity sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==
@@ -2744,7 +2744,7 @@ cross-spawn@^6.0.0, cross-spawn@^6.0.5:
     shebang-command "^1.2.0"
     which "^1.2.9"
 
-cross-spawn@^7.0.2, cross-spawn@^7.0.3:
+cross-spawn@^7.0.1, cross-spawn@^7.0.2, cross-spawn@^7.0.3:
   version "7.0.3"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-7.0.3.tgz#f73a85b9d5d41d045551c177e2882d4ac85728a6"
   integrity sha512-iRDPJKUPVEND7dHPO8rkbOnPpyDygcDFtWjpeWNCgy8WP2rXcxXL8TskReQl6OrB2G7+UJrags1q15Fudc7G6w==