diff --git a/user/config/awesome/rc.lua b/user/config/awesome/rc.lua
index 798b8c1..fe2c203 100644
--- a/user/config/awesome/rc.lua
+++ b/user/config/awesome/rc.lua
@@ -52,7 +52,7 @@ beautiful.init(theme)
 -- This is used later as the default terminal and editor to run.
 terminal = "alacritty"
 run = "rofi -show drun"
-browser = "firefox"
+browser = "librewolf"
 file_manager = "dolphin"
 editor = "nvim"
 editor_cmd = terminal .. " -e " .. editor
diff --git a/user/config/bash/custom b/user/config/bash/custom
index 2ed8710..e348ba5 100644
--- a/user/config/bash/custom
+++ b/user/config/bash/custom
@@ -72,7 +72,7 @@ _exists zoxide && eval "$(zoxide init bash)"
 # set vi mode
 set -o vi
 _exists nvim && export EDITOR=nvim || export EDITOR=vim
-export BROWSER=firefox
+export BROWSER=librewolf
 
 # disable xon/xoff flow control (ctrl-s, ctrl-q)
 stty -ixon
diff --git a/user/config/picom/picom.conf b/user/config/picom/picom.conf
index e8f0d98..c8bc092 100644
--- a/user/config/picom/picom.conf
+++ b/user/config/picom/picom.conf
@@ -1,13 +1,10 @@
 backend = "glx";
-opacity-rule = [
-#   "90:class_g = 'kitty'",
-];
 blur: {
     method = "dual_kawase",
     strength = 5,
 }
 blur-background-exclude = [
     "fullscreen",
-    "class_g = 'firefox'", # for autoscroll mouse
+    "class_g = 'librewolf'",
 ];
 fading = true;
diff --git a/user/packages.nix b/user/packages.nix
index 5a30671..c2c783c 100644
--- a/user/packages.nix
+++ b/user/packages.nix
@@ -30,6 +30,7 @@
     ]
     ++ lib.optionals config.u.has.graphical [
       (config.u.lib.localHome pkgs.firefox "firefox" "bin/firefox")
+      (config.u.lib.localHome pkgs.librewolf "librewolf" "bin/librewolf")
       alacritty
       nsxiv
       rofi
diff --git a/user/xdg.nix b/user/xdg.nix
index 116d82e..ee995a1 100644
--- a/user/xdg.nix
+++ b/user/xdg.nix
@@ -8,7 +8,7 @@ lib.mkIf config.u.has.graphical {
   xdg.mimeApps.enable = true;
   xdg.mimeApps.defaultApplications = let
     image = "nsxiv-rifle.desktop";
-    browser = "firefox.desktop";
+    browser = "librewolf.desktop";
     text = "nvim.desktop";
     media = "mpv.desktop";
   in {