diff --git a/modules/browsers.nix b/modules/browsers.nix
index 90ffd78..7fd0e6a 100644
--- a/modules/browsers.nix
+++ b/modules/browsers.nix
@@ -1,5 +1,5 @@
-{inputs,}: {
+{inputs,...}: {
 	flake.nixosModules.browsers = {pkgs,...}: {
 		programs.firefox.enable = true;
-	}
+	};
 }
diff --git a/modules/configurations.nix b/modules/configurations.nix
index 65cc101..6d0be81 100644
--- a/modules/configurations.nix
+++ b/modules/configurations.nix
@@ -2,6 +2,7 @@
 	flake.nixosConfigurations.nixos = inputs.nixpkgs.lib.nixosSystem {
 		specialArgs = { inherit inputs; };
 		modules = [
+			self.nixosModules.overlay
 			self.nixosModules.nixos-host
 			self.nixosModules.ui
 			self.nixosModules.packages
diff --git a/modules/overlay.nix b/modules/overlay.nix
new file mode 100644
index 0000000..bbfbbe2
--- /dev/null
+++ b/modules/overlay.nix
@@ -0,0 +1,9 @@
+{ inputs, ... }: {
+  flake.nixosModules.overlay = { pkgs, ... }: {
+    nixpkgs.overlays = [
+      (final: prev: {
+        helium = pkgs.callPackage ../pkgs/helium.nix { };
+      })
+    ];
+  };
+}
diff --git a/modules/packages.nix b/modules/packages.nix
index c6358b3..ce9d5ff 100644
--- a/modules/packages.nix
+++ b/modules/packages.nix
@@ -21,6 +21,9 @@
 			quickshell
 			rofi
 			slack
+			feishin
+			nixd
+			helium
 		];
 	};
 }
diff --git a/pkgs/helium.nix b/pkgs/helium.nix
new file mode 100644
index 0000000..ac9416b
--- /dev/null
+++ b/pkgs/helium.nix
@@ -0,0 +1,22 @@
+{ pkgs, ... }:
+
+pkgs.appimageTools.wrapType2 rec {
+  pname = "helium";
+  version = "0.9.4.1";
+
+  src = pkgs.fetchurl {
+    url = "https://github.com/imputnet/helium-linux/releases/download/${version}/${pname}-${version}-x86_64.AppImage";
+    hash = "sha256-N5gdWuxOrIudJx/4nYo4/SKSxakpTFvL4zzByv6Cnug=";
+  };
+
+  extraInstallCommands =
+    let
+      contents = pkgs.appimageTools.extract { inherit pname version src; };
+    in
+    ''
+      install -m 444 -D ${contents}/${pname}.desktop -t $out/share/applications
+      substituteInPlace $out/share/applications/${pname}.desktop \
+        --replace 'Exec=AppRun' 'Exec=${pname}'
+      cp -r ${contents}/usr/share/icons $out/share
+    '';
+}