diff --git a/modules/home/users/msyds/sioyek.nix b/modules/home/users/msyds/sioyek.nix
new file mode 100644
index 0000000..1530d6e
--- /dev/null
+++ b/modules/home/users/msyds/sioyek.nix
@@ -0,0 +1,19 @@
+{ config, lib, pkgs, ... }:
+
+let cfg = config.sydnix.users.msyds.sioyek;
+in {
+  options.sydnix.users.msyds.sioyek = {
+    enable = lib.mkEnableOption "Sioyek";
+  };
+
+  config = lib.mkIf cfg.enable {
+    programs.sioyek = {
+      enable = true;
+      config = {
+	startup_commands = ''
+	  toggle_dark_mode
+	'';
+      };
+    };
+  };
+}
diff --git a/users/msyds/default.nix b/users/msyds/default.nix
index 60102ce..dba99dd 100644
--- a/users/msyds/default.nix
+++ b/users/msyds/default.nix
@@ -68,6 +68,7 @@
         syncthing.enable = true;
         fonts.enable = true;
 	dank-material-shell.enable = true;
+	sioyek.enable = true;
       };
     };