diff --git a/package.json b/package.json
index aae6c85..08d08b1 100644
--- a/package.json
+++ b/package.json
@@ -57,6 +57,7 @@
   "dependencies": {
     "@babel/runtime": "^7.6.3",
     "terser-webpack-plugin": "^2.2.1",
-    "webextension-polyfill": "^0.5.0"
+    "webextension-polyfill": "^0.5.0",
+    "wext-manifest": "^1.0.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index cac74c4..ac8a24b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7301,6 +7301,11 @@ websocket-extensions@>=0.1.1:
   resolved "https://registry.yarnpkg.com/websocket-extensions/-/websocket-extensions-0.1.3.tgz#5d2ff22977003ec687a4b87073dfbbac146ccf29"
   integrity sha512-nqHUnMXmBzT0w570r2JpJxfiSD1IzoI+HGVdd3aZ0yNi3ngvQ4jv1dtHt5VGxfI2yj5yqImPhOK4vmIh2xMbGg==
 
+wext-manifest@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/wext-manifest/-/wext-manifest-1.0.0.tgz#65e7e276570cd4fe2b04f6de02cce895afe3964d"
+  integrity sha512-VBVgT4H7S5KKuo+MA3FHH9+70f1mGxhlgmvZ6Z/079TUVV+v7Ypwcfx2IDrfnHIMyUJUtynXSNSCeV05vZy8gA==
+
 which-module@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-1.0.0.tgz#bba63ca861948994ff307736089e3b96026c2a4f"