diff --git a/4.1-Extensions.md b/4.1-Extensions.md
index 094adfd..9383cc9 100644
--- a/4.1-Extensions.md
+++ b/4.1-Extensions.md
@@ -12,6 +12,9 @@ This list covers privacy and security related extensions only. While we believe
 
 ---
 ### :small_orange_diamond: Extensions [Maybe]
+
+* [Multi-Account Containers](https://addons.mozilla.org/firefox/addon/multi-account-containers)
+  - Might be useful if you want to log into the same site using different accounts as you will be able to select certain tabs to use specific VPN servers
 * [Header Editor](https://addons.mozilla.org/firefox/addon/header-editor/) | [GitHub](https://github.com/FirefoxBar/HeaderEditor)
   - Allows you to run [Rules](https://github.com/arkenfox/user.js/wiki/4.2.4-Header-Editor) to modify modify the request header and response header, cancel a request and redirect a request. Be careful not to alter your passive fingerprint
 * [Request Control](https://addons.mozilla.org/firefox/addon/requestcontrol/) | [GitHub](https://github.com/tumpio/requestcontrol) | [Manual](https://github.com/tumpio/requestcontrol/blob/master/_locales/en/manual.md) | [Testing links](https://github.com/tumpio/requestcontrol/wiki/Testing-links)
@@ -66,7 +69,7 @@ These extensions will not mask or alter any data sent or received, but may be us
 
 * Temporary Containers
   - Redundant with Total Cookie Protection (dFPI) or FPI
-  - If you want to multiple logins to the same site, use MAC
+  - If you want mutilple and/or concurrent logins to the same site, use Multi-Account Containers
 * Cookie extensions
   - Redundant with Total Cookie Protection (dFPI) or FPI