diff --git a/hosts/voidspear/configuration.nix b/hosts/voidspear/configuration.nix
index c18b301..5aeead9 100644
--- a/hosts/voidspear/configuration.nix
+++ b/hosts/voidspear/configuration.nix
@@ -77,12 +77,55 @@
   services.zerotierone.enable = true;
   services.zerotierone.joinNetworks = [ "b3ce837c63" "363c67c55a726a89" ];
 
+  # nix-ld
   programs.nix-ld.enable = true;
   programs.nix-ld.libraries = with pkgs; [
     libGL
     SDL2
   ];
 
+  # Firejail
+  programs.firejail = {
+    enable = true;
+    wrappedBinaries = { 
+      firefox = {
+        executable = "${pkgs.firefox}/bin/firefox";
+        profile = "${pkgs.firejail}/etc/firejail/firefox.profile";
+        extraArgs = [
+          "--env=GTK_THEME=Adwaita:dark"
+        ];
+      };
+      signal-desktop-bin = {
+        executable = "${pkgs.signal-desktop-bin}/bin/signal-desktop";
+        profile = "${pkgs.firejail}/etc/firejail/signal-desktop.profile";
+        extraArgs = [
+          "--env=GTK_THEME=Adwaita:dark"
+        ];
+      };
+      vesktop = {
+        executable = "${pkgs.vesktop}/bin/vesktop";
+        profile = "${pkgs.firejail}/etc/firejail/vesktop.profile";
+        extraArgs = [
+          "--env=GTK_THEME=Adwaita:dark"
+        ];
+      };
+      spotify = {
+        executable = "${pkgs.spotify}/bin/spotify";
+        profile = "${pkgs.firejail}/etc/firejail/spotify.profile";
+        extraArgs = [
+          "--env=GTK_THEME=Adwaita:dark"
+        ];
+      };
+      obsidian = {
+        executable = "${pkgs.vesktop}/bin/obsidian";
+        profile = "${pkgs.firejail}/etc/firejail/obsidian.profile";
+        extraArgs = [
+          "--env=GTK_THEME=Adwaita:dark"
+          "--net=none" # I don't use community plugins... yet.
+        ];
+      };
+    };
+  };
 
   # Enable the X11 windowing system.
   # You can disable this if you're only using the Wayland session.
diff --git a/hosts/voidspear/home.nix b/hosts/voidspear/home.nix
index e7110b9..60ad87e 100644
--- a/hosts/voidspear/home.nix
+++ b/hosts/voidspear/home.nix
@@ -6,7 +6,6 @@
   home.packages = with pkgs; [
     neovim
     fastfetch
-    firefox
     git
     cava
     kdePackages.qtwebsockets
@@ -14,13 +13,11 @@
       python313Packages.websockets
       python313Packages.requests # basic python test env
     ]))
-    signal-desktop-bin
     simplex-chat-desktop
     qbittorrent
     ffmpeg
     yt-dlp
     prismlauncher
-    vesktop
     keepassxc
     obs-studio
     mpv
@@ -38,8 +35,6 @@
     })
     woeusb-ng
     ntfs3g
-    obsidian
-    spotify
   ];
 
   home.file = {