diff --git a/hosts/Garand-Desktop/home-modules.nix b/hosts/Garand-Desktop/home-modules.nix
index 9fcc348..5179ccd 100644
--- a/hosts/Garand-Desktop/home-modules.nix
+++ b/hosts/Garand-Desktop/home-modules.nix
@@ -52,6 +52,16 @@ _: {
   */
   anki.enable = true; # Anki: spaced‑repetition flashcard program
 
+  /*
+  Productivity / Knowledge Management
+  */
+  obsidian = {
+    enable = true; # Obsidian: Powerful knowledge base that works on top of a local folder of plain text Markdown files
+    vaults = {
+      "BoM".enable = true; # Blood of Mages: ttrpg session
+    };
+  };
+
   /*
   XDG desktop entries (PWA)
   */
diff --git a/hosts/Garand-Laptop/home-modules.nix b/hosts/Garand-Laptop/home-modules.nix
index 57460d4..1e45598 100644
--- a/hosts/Garand-Laptop/home-modules.nix
+++ b/hosts/Garand-Laptop/home-modules.nix
@@ -52,6 +52,16 @@ _: {
   */
   anki.enable = true; # Anki: spaced‑repetition flashcard program
 
+  /*
+  Productivity / Knowledge Management
+  */
+  obsidian = {
+    enable = true; # Obsidian: Powerful knowledge base that works on top of a local folder of plain text Markdown files
+    vaults = {
+      "BoM".enable = true; # Blood of Mages: ttrpg session
+    };
+  };
+
   /*
   XDG desktop entries (PWA)
   */
diff --git a/hosts/default/home-modules.nix b/hosts/default/home-modules.nix
index 00b0c73..a809678 100644
--- a/hosts/default/home-modules.nix
+++ b/hosts/default/home-modules.nix
@@ -52,6 +52,16 @@ _: {
   */
   anki.enable = false; # Anki: spaced‑repetition flashcard program
 
+  /*
+  Productivity / Knowledge Management
+  */
+  obsidian = {
+    enable = false; # Obsidian: Powerful knowledge base that works on top of a local folder of plain text Markdown files
+    vaults = {
+      "BoM".enable = false; # Blood of Mages: ttrpg session
+    };
+  };
+
   /*
   XDG desktop entries (PWA)
   */
diff --git a/modules/core/packages/appimages/helium.nix b/modules/core/packages/appimages/helium.nix
index 0367ee8..15a4afc 100644
--- a/modules/core/packages/appimages/helium.nix
+++ b/modules/core/packages/appimages/helium.nix
@@ -4,8 +4,8 @@
   fetchurl,
 }: let
   pname = "helium";
-  version = "0.13.3.1";
-  hash = "sha256-RS+Sn42V+HjCw41N1zayMVIqlgH+i2B2IdVJwBPmw00=";
+  version = "0.13.4.1";
+  hash = "sha256-z23up+T6bj6F+cQslmI92bEksIAw1OQHRIrmQSaaxY8=";
 
   src = fetchurl {
     url = "https://github.com/imputnet/helium-linux/releases/download/${version}/helium-${version}-x86_64.AppImage";
diff --git a/modules/home/default.nix b/modules/home/default.nix
index daba246..9ab915c 100644
--- a/modules/home/default.nix
+++ b/modules/home/default.nix
@@ -8,6 +8,7 @@ _: {
     ./kitty
     ./librewolf
     ./noctalia
+    ./obsidian
     ./scripts
     ./vscodium
     ./xdg
diff --git a/modules/home/obsidian/default-settings/default.nix b/modules/home/obsidian/default-settings/default.nix
new file mode 100644
index 0000000..eed7124
--- /dev/null
+++ b/modules/home/obsidian/default-settings/default.nix
@@ -0,0 +1 @@
+_: {}
diff --git a/modules/home/obsidian/default.nix b/modules/home/obsidian/default.nix
new file mode 100644
index 0000000..7be412c
--- /dev/null
+++ b/modules/home/obsidian/default.nix
@@ -0,0 +1,19 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}: {
+  options.obsidian.enable = lib.mkEnableOption "Obsidian";
+
+  config.programs.obsidian = lib.mkIf config.obsidian.enable {
+    enable = true;
+    package = pkgs.obsidian;
+    cli.enable = true;
+  };
+
+  imports = [
+    # ./default-settings
+    ./vaults
+  ];
+}
diff --git a/modules/home/obsidian/vaults/BoM.nix b/modules/home/obsidian/vaults/BoM.nix
new file mode 100644
index 0000000..84f27c5
--- /dev/null
+++ b/modules/home/obsidian/vaults/BoM.nix
@@ -0,0 +1,12 @@
+{
+  lib,
+  config,
+  ...
+}: {
+  options.obsidian.vaults."BoM".enable = lib.mkEnableOption "Obsidian BoM vault";
+
+  config.programs.obsidian.vaults."BoM" = lib.mkIf config.obsidian.vaults."BoM".enable {
+    enable = true;
+    target = "Obsidian/BoM";
+  };
+}
diff --git a/modules/home/obsidian/vaults/default.nix b/modules/home/obsidian/vaults/default.nix
new file mode 100644
index 0000000..68b74b4
--- /dev/null
+++ b/modules/home/obsidian/vaults/default.nix
@@ -0,0 +1,5 @@
+_: {
+  imports = [
+    ./BoM.nix
+  ];
+}
diff --git a/modules/home/stylix.nix b/modules/home/stylix.nix
index 48cbba6..a213736 100644
--- a/modules/home/stylix.nix
+++ b/modules/home/stylix.nix
@@ -91,5 +91,15 @@
       enable = true;
       colors.enable = true;
     };
+
+    obsidian = {
+      enable = true;
+      colors.enable = true;
+      fonts.enable = true;
+      polarity.enable = true;
+      vaultNames = [
+        "BoM"
+      ];
+    };
   };
 }