diff --git a/modules/desktop/sway.nix b/modules/desktop/sway.nix
index f1fe6e6..e62b073 100644
--- a/modules/desktop/sway.nix
+++ b/modules/desktop/sway.nix
@@ -95,19 +95,17 @@
 
               { command = "discord"; }
               { command = "thunderbird"; }
-              { command = "mattermost-desktop"; }
               { command = "signal-desktop --"; }
+              { command = "ferdium"; }
               { command = ''sh -c "sleep 2 && exec keepassxc"''; }
             ];
             assigns = {
               "1" = [ { app_id = "firefox"; } ];
               "9" = [ { app_id = "thunderbird"; } ];
               "10" = [
-                { class = "Mattermost"; }
                 { class = "Signal"; }
                 { class = "discord"; }
-                { class = "Element"; }
-                { app_id = "weechat"; }
+                { class = "Ferdium"; }
               ];
             };
             bars = [
diff --git a/users/catvayor.nix b/users/catvayor.nix
index da43607..1bc8e9b 100644
--- a/users/catvayor.nix
+++ b/users/catvayor.nix
@@ -73,8 +73,8 @@
 
         discord
         signal-desktop
-        mattermost-desktop
         keepassxc
+        ferdium
       ];
       pointerCursor = {
         package = pkgs.breeze-hacked-cursor-theme;