diff --git a/4.1-Extensions.md b/4.1-Extensions.md
index 5659b6c..8b3cfdf 100644
--- a/4.1-Extensions.md
+++ b/4.1-Extensions.md
@@ -82,7 +82,7 @@ These extensions will not mask or alter any data sent or received, but may be us
 * Neat URL, ClearURLs
   - Redundant with uBlock Origin's [`removeparam`](https://github.com/gorhill/uBlock/wiki/Static-filter-syntax#removeparam) and added lists. Any potential extra coverage provided by additional extensions is going to be minimal
 * HTTPS Everywhere
-  - Redundant with [HTTPS-Only Mode](https://blog.mozilla.org/security/2020/11/17/firefox-83-introduces-https-only-mode/) and scheduled for [deprecation](https://www.eff.org/deeplinks/2021/09/https-actually-everywhere)
+  - Redundant with [HTTPS-Only Mode](https://blog.mozilla.org/security/2020/11/17/firefox-83-introduces-https-only-mode/) and scheduled for deprecation: [maintenance mode only](https://www.eff.org/deeplinks/2021/09/https-actually-everywhere) Sept 2021, [sunsets](https://www.eff.org/https-everywhere/set-https-default-your-browser) Jan 2023
 * CSS Exfil Protection
   - Practically zero threat and if the platform's CSS was compromised, you'd have bigger problems to worry about
 * LocalCDN, Decentraleyes