diff --git a/4.1-Extensions.md b/4.1-Extensions.md
index 7324559..85118da 100644
--- a/4.1-Extensions.md
+++ b/4.1-Extensions.md
@@ -17,7 +17,7 @@ These are all, where applicable, best configured to `deny-all` and whitelist.
 * [HTTPS Everywhere](https://addons.mozilla.org/firefox/addon/https-everywhere/) <sup>✔ [Privacy](https://www.eff.org/code/privacy/policy)</sup> | [GitHub](https://github.com/EFForg/https-everywhere)
 * [HTTPS by default](https://addons.mozilla.org/firefox/addon/https-by-default/) | [GitHub](https://github.com/Rob--W/https-by-default)
   * changes the behavior for schemeless URLs typed in the location bar
-* [Smart Referer](https://addons.mozilla.org/firefox/addon/smart-referer/) | [GitHub](https://github.com/meh/smart-referer)
+* [Smart Referer](https://addons.mozilla.org/firefox/addon/smart-referer/) | [GitLab](https://gitlab.com/smart-referer/smart-referer) | [GitHub <sup>Archive</sup>](https://github.com/meh/smart-referer)
 * [Header Editor](https://addons.mozilla.org/firefox/addon/header-editor/) | [GitHub](https://github.com/FirefoxBar/HeaderEditor)
   * Allows you to run [Rules](https://github.com/ghacksuserjs/ghacks-user.js/wiki/4.2.4-Header-Editor) to modify headers such as blocking ETags
 * [Neat URL](https://addons.mozilla.org/firefox/addon/neat-url/) <sup>✔ [Privacy](https://addons.mozilla.org/firefox/addon/neat-url/privacy/)</sup> | [GitHub](https://github.com/Smile4ever/firefoxaddons)