diff --git a/nix/configurations/vanadium/home/firefox.nix b/nix/configurations/vanadium/home/firefox.nix
index 03c53af9..2dc02959 100644
--- a/nix/configurations/vanadium/home/firefox.nix
+++ b/nix/configurations/vanadium/home/firefox.nix
@@ -29,6 +29,8 @@ in {
           addons.shinigami-eyes
 
           addons.consent-o-matic
+
+          addons.tree-style-tab
         ];
       };