diff --git a/background/token-manager.js b/background/token-manager.js
index 8be21874..63f69652 100644
--- a/background/token-manager.js
+++ b/background/token-manager.js
@@ -1,10 +1,11 @@
-/* global chromeLocal promisifyChrome FIREFOX */
+/* global chromeLocal promisifyChrome webextLaunchWebAuthFlow FIREFOX */
 /* exported tokenManager */
 'use strict';
 
 const tokenManager = (() => {
   promisifyChrome({
-    identity: ['launchWebAuthFlow'],
+    'windows': ['create', 'update', 'remove'],
+    'tabs': ['create', 'update', 'remove']
   });
   const AUTH = {
     dropbox: {
@@ -160,9 +161,10 @@ const tokenManager = (() => {
       Object.assign(query, provider.authQuery);
     }
     const url = `${provider.authURL}?${stringifyQuery(query)}`;
-    return browser.identity.launchWebAuthFlow({
+    return webextLaunchWebAuthFlow({
       url,
-      interactive
+      interactive,
+      redirect_uri: query.redirect_uri
     })
       .then(url => {
         const params = new URLSearchParams(
@@ -185,7 +187,7 @@ const tokenManager = (() => {
           code,
           grant_type: 'authorization_code',
           client_id: provider.clientId,
-          redirect_uri: provider.redirect_uri || chrome.identity.getRedirectURL()
+          redirect_uri: query.redirect_uri
         };
         if (provider.clientSecret) {
           body.client_secret = provider.clientSecret;
diff --git a/manifest.json b/manifest.json
index 89a62be7..9d59db44 100644
--- a/manifest.json
+++ b/manifest.json
@@ -38,6 +38,7 @@
       "vendor/semver-bundle/semver.js",
       "vendor/db-to-cloud/db-to-cloud.min.js",
       "vendor/uuid/uuid.min.js",
+      "vendor/webext-launch-web-auth-flow/webext-launch-web-auth-flow.min.js",
       "background/token-manager.js",
       "background/sync.js",
       "background/content-scripts.js",
diff --git a/package-lock.json b/package-lock.json
index 4872bfa8..8ecf3451 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7934,6 +7934,11 @@
         }
       }
     },
+    "webext-launch-web-auth-flow": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/webext-launch-web-auth-flow/-/webext-launch-web-auth-flow-0.1.0.tgz",
+      "integrity": "sha512-3W8ANT9/6uL6NX5SiaKQee439dfiS1NT8wSc+vmjly/2MmH7FBqGFBXLfBFw296w8OOqHNPnEdNcBkDGJQkDgg=="
+    },
     "webext-tx-fix": {
       "version": "0.3.3",
       "resolved": "https://registry.npmjs.org/webext-tx-fix/-/webext-tx-fix-0.3.3.tgz",
diff --git a/package.json b/package.json
index 49d423d4..09ef363a 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,8 @@
     "stylelint-bundle": "^8.0.0",
     "stylus-lang-bundle": "^0.54.5",
     "usercss-meta": "^0.9.0",
-    "uuid": "^8.1.0"
+    "uuid": "^8.1.0",
+    "webext-launch-web-auth-flow": "^0.1.0"
   },
   "devDependencies": {
     "archiver": "^4.0.1",
diff --git a/tools/build-vendor.js b/tools/build-vendor.js
index 1e3d5c24..639a74ab 100644
--- a/tools/build-vendor.js
+++ b/tools/build-vendor.js
@@ -62,6 +62,9 @@ const files = {
   ],
   'uuid': [
     'dist/umd/uuidv4.min.js → uuid.min.js'
+  ],
+  'webext-launch-web-auth-flow': [
+    'dist/webext-launch-web-auth-flow.min.js → webext-launch-web-auth-flow.min.js'
   ]
 };
 
diff --git a/vendor/webext-launch-web-auth-flow/LICENSE b/vendor/webext-launch-web-auth-flow/LICENSE
new file mode 100644
index 00000000..792e1731
--- /dev/null
+++ b/vendor/webext-launch-web-auth-flow/LICENSE
@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2020 eight
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
diff --git a/vendor/webext-launch-web-auth-flow/README.md b/vendor/webext-launch-web-auth-flow/README.md
new file mode 100644
index 00000000..821ceade
--- /dev/null
+++ b/vendor/webext-launch-web-auth-flow/README.md
@@ -0,0 +1,5 @@
+## webext-launch-web-auth-flow v0.1.0
+
+Following files are copied from npm (node_modules):
+
+* webext-launch-web-auth-flow.min.js: dist\webext-launch-web-auth-flow.min.js
diff --git a/vendor/webext-launch-web-auth-flow/webext-launch-web-auth-flow.min.js b/vendor/webext-launch-web-auth-flow/webext-launch-web-auth-flow.min.js
new file mode 100644
index 00000000..7e8f7587
--- /dev/null
+++ b/vendor/webext-launch-web-auth-flow/webext-launch-web-auth-flow.min.js
@@ -0,0 +1,2 @@
+var webextLaunchWebAuthFlow=function(){"use strict";function e(e,r,t,n,o,i,s){try{var u=e[i](s),a=u.value}catch(e){return void t(e)}u.done?r(a):Promise.resolve(a).then(n,o)}function r(r){return function(){var t=this,n=arguments;return new Promise((function(o,i){var s=r.apply(t,n);function u(r){e(s,o,i,u,a,"next",r)}function a(r){e(s,o,i,u,a,"throw",r)}u(void 0)}))}}function t(e){return n.apply(this,arguments)}function n(){return(n=r((function*(e){if(browser.windows)return yield browser.windows.create(e);const r={active:"minimized"!==e.state,url:e.url};return{tabs:[yield browser.tabs.create(r)]}}))).apply(this,arguments)}function o(e,r,t){return i.apply(this,arguments)}function i(){return(i=r((function*(e,r,t){return e?yield browser.windows.update(e,t):yield browser.tabs.update(r,{active:t.focused})}))).apply(this,arguments)}function s(e,r){return u.apply(this,arguments)}function u(){return(u=r((function*(e,r){return e?yield browser.windows.remove(e):yield browser.tabs.remove(r)}))).apply(this,arguments)}function a(){const e={};return e.promise=new Promise((r,t)=>{e.resolve=r,e.reject=t}),e}function c(){return(c=r((function*({url:e,redirect_uri:r,interactive:n=!1}){const i=yield t({type:"popup",url:e,state:"minimized"}),u=i.id,c=i.tabs[0].id,d=a(),l=d.promise,w=d.resolve,b=d.reject;browser.webRequest.onBeforeRequest.addListener(f,{urls:["*://*/*"],tabId:c,types:["main_frame"]},["blocking"]),browser.webNavigation.onDOMContentLoaded.addListener(p),browser.tabs.onRemoved.addListener(v);try{return yield l}finally{browser.webRequest.onBeforeRequest.removeListener(f),browser.webNavigation.onDOMContentLoaded.removeListener(p),browser.tabs.onRemoved.removeListener(v),s(u,c).catch(e=>console.error(e))}function f(e){if(!e.frameId&&e.tabId===c&&e.url.startsWith(r))return w(e.url),{cancel:!0}}function p(e){e.frameId||e.tabId!==c||(n?o(u,c,{focused:!0,state:"normal"}).catch(e=>console.error(e)):b(new Error("User interaction required")),browser.webNavigation.onDOMContentLoaded.removeListener(p))}function v(e){e===c&&b(new Error("Canceled by user"))}}))).apply(this,arguments)}return function(e){return c.apply(this,arguments)}}();
+//# sourceMappingURL=webext-launch-web-auth-flow.min.js.map