diff --git a/src/imports/background/data-sources.js b/src/imports/background/data-sources.js
index 9821ca38ef..58e32e1e94 100644
--- a/src/imports/background/data-sources.js
+++ b/src/imports/background/data-sources.js
@@ -9,7 +9,6 @@ import {
     startOfDay,
     WEEK_IN_MS,
 } from '@worldbrain/memex-common/lib/utils/date-time'
-import { browser } from 'webextension-polyfill-ts'
 
 const getDirNestedCollectionName = (dirNode) => {
     const parentCollectionName = dirNode.collectionName ?? ''
diff --git a/src/imports/background/index.ts b/src/imports/background/index.ts
index 2de0d25e32..5cb1298370 100644
--- a/src/imports/background/index.ts
+++ b/src/imports/background/index.ts
@@ -6,7 +6,7 @@ import TagsBackground from 'src/tags/background'
 import CustomListBackground from 'src/custom-lists/background'
 import { PageIndexingBackground } from 'src/page-indexing/background'
 import BookmarksBackground from 'src/bookmarks/background'
-import type { Runtime, Storage } from 'webextension-polyfill-ts'
+import type { Runtime, Storage } from 'webextension-polyfill'
 
 // Constants
 export const importStateStorageKey = 'import_items'
diff --git a/src/imports/background/progress-manager.test.ts b/src/imports/background/progress-manager.test.ts
index 17c2135b0c..b78a11c525 100644
--- a/src/imports/background/progress-manager.test.ts
+++ b/src/imports/background/progress-manager.test.ts
@@ -8,7 +8,8 @@ import Processor from './item-processor'
 
 import * as urlLists from './url-list.test.data'
 import initData, { TestData, diff } from './state-manager.test.data'
-import { browser } from 'webextension-polyfill-ts'
+import browser from 'webextension-polyfill'
+import { Browser } from 'webextension-polyfill'
 
 jest.mock('src/blacklist/background/interface')
 jest.mock('src/activity-logger')
@@ -24,7 +25,7 @@ const runSuite = (DATA: TestData, skip = false) => () => {
         const dataSources = new DataSources({
             history: DATA.history as any,
             bookmarks: DATA.bookmarks as any,
-            browserAPIs: browser,
+            browserAPIs: browser as Browser,
         })
 
         const itemCreator = new ItemCreator({
@@ -33,6 +34,7 @@ const runSuite = (DATA: TestData, skip = false) => () => {
                 histKeys: new Set(),
                 bmKeys: new Set(),
             }),
+            browserAPIs: browser as Browser,
         })
         stateManager = new ImportStateManager({
             storageManager: null,
diff --git a/src/imports/background/state-manager.test.ts b/src/imports/background/state-manager.test.ts
index 7ee045b7f4..6b7fb5791a 100644
--- a/src/imports/background/state-manager.test.ts
+++ b/src/imports/background/state-manager.test.ts
@@ -7,7 +7,8 @@ import { ImportItem } from './types'
 
 import * as urlLists from './url-list.test.data'
 import initData, { TestData, diff } from './state-manager.test.data'
-import { browser } from 'webextension-polyfill-ts'
+import browser from 'webextension-polyfill'
+import { Browser } from 'webextension-polyfill'
 
 type ForEachChunkCb = (
     values: [string, ImportItem][],
@@ -27,10 +28,11 @@ const runSuite = (DATA: TestData) => () => {
         const dataSources = new DataSources({
             history: DATA.history as any,
             bookmarks: DATA.bookmarks as any,
-            browserAPIs: browser,
+            browserAPIs: browser as Browser,
         })
 
         const itemCreator = new ItemCreator({
+            browserAPIs: browser as Browser,
             dataSources,
             existingKeySource: async () => ({
                 histKeys: new Set(),
@@ -60,6 +62,7 @@ const runSuite = (DATA: TestData) => () => {
                 histKeys: new Set(),
                 bmKeys: new Set(),
             }),
+            browserAPIs: browser as Browser,
         })
         const localState = new State({
             itemCreator,