diff --git a/nix/configurations/tungsten/home/firefox.nix b/nix/configurations/tungsten/home/firefox.nix
index 4eacc0b8..50823048 100644
--- a/nix/configurations/tungsten/home/firefox.nix
+++ b/nix/configurations/tungsten/home/firefox.nix
@@ -20,7 +20,7 @@ in {
 
     profiles = {
       default = {
-        extensions = let
+        extensions.packages = let
           addons = nur.repos.rycee.firefox-addons;
         in [
           addons.languagetool
@@ -40,7 +40,7 @@ in {
           userChrome
           ;
 
-        extensions = let
+        extensions.packages = let
           addons = nur.repos.rycee.firefox-addons;
         in [addons.multi-account-containers];
 
@@ -67,7 +67,7 @@ in {
           userChrome
           ;
 
-        extensions = let
+        extensions.packages = let
           addons = nur.repos.rycee.firefox-addons;
         in [addons.tampermonkey];
       };
diff --git a/nix/configurations/vanadium/home/firefox.nix b/nix/configurations/vanadium/home/firefox.nix
index caac3537..977e9956 100644
--- a/nix/configurations/vanadium/home/firefox.nix
+++ b/nix/configurations/vanadium/home/firefox.nix
@@ -20,7 +20,7 @@ in {
 
     profiles = {
       default = {
-        extensions = let
+        extensions.packages = let
           addons = nur.repos.rycee.firefox-addons;
         in [
           addons.languagetool
@@ -42,7 +42,7 @@ in {
           userChrome
           ;
 
-        extensions = let
+        extensions.packages = let
           addons = nur.repos.rycee.firefox-addons;
         in [addons.multi-account-containers];
 
@@ -69,7 +69,7 @@ in {
           userChrome
           ;
 
-        extensions = let
+        extensions.packages = let
           addons = nur.repos.rycee.firefox-addons;
         in [addons.tampermonkey];
       };
diff --git a/nix/homeModules/common/firefox.nix b/nix/homeModules/common/firefox.nix
index 30ea18a6..0bf955d4 100644
--- a/nix/homeModules/common/firefox.nix
+++ b/nix/homeModules/common/firefox.nix
@@ -48,7 +48,7 @@ in {
         "full-screen-api.ignore-widgets" = true; # limit fullscreen mode to window
       };
 
-      extensions = let
+      extensions.packages = let
         addons = nur.repos.rycee.firefox-addons;
       in [
         addons.ublock-origin