diff --git a/package-lock.json b/package-lock.json
index 0a1a95a..ca01a2a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4123,6 +4123,12 @@
       "integrity": "sha1-MdDb9RdimM2AYnSsxDgzhbgai7Y=",
       "dev": true
     },
+    "webextension-polyfill": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/webextension-polyfill/-/webextension-polyfill-0.3.0.tgz",
+      "integrity": "sha512-SKwaW0Q3Ke/MZnYFw5J+zb4vNcDXFfP6TJxMIqFqEm+oMr3V+B1Hk6vq37rsJaglYIXkeDn5Y46M+x+ARbA+8g==",
+      "dev": true
+    },
     "webpack": {
       "version": "4.16.5",
       "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.16.5.tgz",
diff --git a/package.json b/package.json
index 89eea78..a529a13 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,7 @@
     "ts-loader": "^4.4.2",
     "typescript": "^3.0.1",
     "web-ext-types": "^2.1.0",
+    "webextension-polyfill": "^0.3.0",
     "webpack": "^4.16.5",
     "webpack-cli": "^3.1.0"
   },
diff --git a/src/background.ts b/src/background.ts
index a02f5c6..81179fb 100644
--- a/src/background.ts
+++ b/src/background.ts
@@ -15,6 +15,7 @@
  */
 
 import * as _ from 'lodash/fp';
+import * as browser from 'webextension-polyfill';
 
 const buildSearchURL = (instance: string, query: string): string => `https://${instance}/api/v1/search/videos?search=${encodeURIComponent(query)}`;
 
diff --git a/src/options.ts b/src/options.ts
index b38fe2e..4941277 100644
--- a/src/options.ts
+++ b/src/options.ts
@@ -15,6 +15,7 @@
  */
 
 import * as _ from 'lodash/fp';
+import * as browser from 'webextension-polyfill';
 
 function id(id: string): Element { return document.getElementById(id); }
 
diff --git a/src/youtube.ts b/src/youtube.ts
index a59c2b5..10646d2 100644
--- a/src/youtube.ts
+++ b/src/youtube.ts
@@ -15,6 +15,7 @@
  */
 
 import * as _ from 'lodash/fp';
+import * as browser from 'webextension-polyfill';
 
 const watchURL = (host, uuid) => `https://${host}/videos/watch/${uuid}`;
 const thumbnailURL = (host, path) => `https://${host}${path}`;