diff --git a/user.js b/user.js
index a7728ba..a445871 100644
--- a/user.js
+++ b/user.js
@@ -1268,8 +1268,10 @@ user_pref("network.cookie.thirdparty.nonsecureSessionOnly", true); // [FF58+]
  * [WARNING] This will break a LOT of sites' functionality AND extensions!
  * You are better off using an extension for more granular control ***/
    // user_pref("dom.storage.enabled", false);
-/* 2730: disable offline cache ***/
-user_pref("browser.cache.offline.enable", false);
+/* 2730: enforce no offline cache storage (appCache)
+ * The API is easily fingerprinted, use the "storage" pref instead ***/
+   // user_pref("browser.cache.offline.enable", false);
+user_pref("browser.cache.offline.storage.enable", false); // [FF71+] [DEFAULT: false FF84+]
 /* 2740: disable service worker cache and cache storage
  * [NOTE] We clear service worker cache on exiting Firefox (see 2803)
  * [1] https://w3c.github.io/ServiceWorker/#privacy ***/