diff --git a/hosts/neogaia/default.nix b/hosts/neogaia/default.nix
index 568d01a..d7cc9c4 100644
--- a/hosts/neogaia/default.nix
+++ b/hosts/neogaia/default.nix
@@ -55,6 +55,7 @@
   modules.agents.pi.enable = true;
 
   modules.desktop.enable = true;
+  modules.desktop.obsidian.enable = true;
 
   time.timeZone = "America/New_York";
   i18n.defaultLocale = "en_GB.UTF-8";
diff --git a/modules/desktop/obsidian.nix b/modules/desktop/obsidian.nix
new file mode 100644
index 0000000..90fdd52
--- /dev/null
+++ b/modules/desktop/obsidian.nix
@@ -0,0 +1,18 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+# Obsidian as the desktop note-taking vault.
+let
+  cfg = config.modules.desktop.obsidian;
+  user = config.user.name;
+in
+{
+  options.modules.desktop.obsidian.enable = lib.mkEnableOption "Obsidian as the desktop note-taking vault";
+
+  config = lib.mkIf cfg.enable {
+    home-manager.users.${user}.home.packages = [ pkgs.obsidian ];
+  };
+}
diff --git a/modules/desktop/waybar.nix b/modules/desktop/waybar.nix
index fc29cf1..7a63306 100644
--- a/modules/desktop/waybar.nix
+++ b/modules/desktop/waybar.nix
@@ -82,6 +82,7 @@ in
             "class<.*[Ff]irefox.*>" = g "f269";
             "class<chromium.*>" = g "f268";
             "class<[Cc]ode>" = g "f121";
+            "class<obsidian>" = g "f02d";
           };
         };