diff --git a/esbuild/plugins.ts b/esbuild/plugins.ts
index 2f078787..c39a625f 100644
--- a/esbuild/plugins.ts
+++ b/esbuild/plugins.ts
@@ -146,7 +146,8 @@ function processManifestPlugin({
             scripts: [json.background.service_worker]
           }
           json.content_scripts?.forEach((contentScript) => {
-            // @ts-expect-error firefox doesn't support execution context yet
+            // TODO: Remove this when Firefox supports `world` - at least last 10
+            // versions
             contentScript.world = undefined
           })
           delete json.minimum_chrome_version
diff --git a/package.json b/package.json
index 79d97e15..ee01f326 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "@types/react": "^18.3.3",
     "@types/react-dom": "^18.3.0",
     "@types/react-router-dom": "^5.3.3",
-    "@types/webextension-polyfill": "^0.10.7",
+    "@types/webextension-polyfill": "^0.12.0",
     "@typescript-eslint/eslint-plugin": "^7.16.0",
     "@typescript-eslint/parser": "^7.16.0",
     "archiver": "^7.0.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index b913b99d..c42b5331 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -104,8 +104,8 @@ importers:
         specifier: ^5.3.3
         version: 5.3.3
       '@types/webextension-polyfill':
-        specifier: ^0.10.7
-        version: 0.10.7
+        specifier: ^0.12.0
+        version: 0.12.0
       '@typescript-eslint/eslint-plugin':
         specifier: ^7.16.0
         version: 7.16.0(@typescript-eslint/parser@7.16.0(eslint@8.57.0)(typescript@5.5.3))(eslint@8.57.0)(typescript@5.5.3)
@@ -1099,8 +1099,8 @@ packages:
   '@types/tough-cookie@4.0.5':
     resolution: {integrity: sha512-/Ad8+nIOV7Rl++6f1BdKxFSMgmoqEoYbHRpPcx3JEfv8VRsQe9Z4mCXeJBzxs7mbHY/XOZZuXlRNfhpVPbs6ZA==}
 
-  '@types/webextension-polyfill@0.10.7':
-    resolution: {integrity: sha512-10ql7A0qzBmFB+F+qAke/nP1PIonS0TXZAOMVOxEUsm+lGSW6uwVcISFNa0I4Oyj0884TZVWGGMIWeXOVSNFHw==}
+  '@types/webextension-polyfill@0.12.0':
+    resolution: {integrity: sha512-0d1V0jw5wswj11ijrPoUUP+kV2pHCNKDDgQSzNdD1PK5i3vQ0eHiA1xzT5mFwaqdwatrXdgkxgC4BzCQ6C9eUw==}
 
   '@types/yargs-parser@21.0.3':
     resolution: {integrity: sha512-I4q9QU9MQv4oEOz4tAHJtNz1cwuLxn2F3xcc2iV5WdqLPpUnj30aUuxt1mAxYTG+oe8CZMV/+6rU4S4gRDzqtQ==}
@@ -4870,7 +4870,7 @@ snapshots:
 
   '@types/tough-cookie@4.0.5': {}
 
-  '@types/webextension-polyfill@0.10.7': {}
+  '@types/webextension-polyfill@0.12.0': {}
 
   '@types/yargs-parser@21.0.3': {}
 
diff --git a/src/background/services/openPayments.ts b/src/background/services/openPayments.ts
index 1c7ef61d..108f6fae 100644
--- a/src/background/services/openPayments.ts
+++ b/src/background/services/openPayments.ts
@@ -170,7 +170,7 @@ export class OpenPaymentsService {
     const data = await this.browser.storage.local.get(['privateKey', 'keyId'])
 
     if (data.privateKey && data.keyId) {
-      return data as KeyInformation
+      return data as unknown as KeyInformation
     }
 
     throw new Error(
diff --git a/src/background/services/storage.ts b/src/background/services/storage.ts
index 85a876cf..7d9ace01 100644
--- a/src/background/services/storage.ts
+++ b/src/background/services/storage.ts
@@ -109,7 +109,7 @@ export class StorageService {
       await storage.set(data)
       await storage.remove(deleteKeys)
     }
-    return data as Storage
+    return data as unknown as Storage
   }
 
   async getWMState(): Promise<boolean> {