diff --git a/pkgs/by-name/co/cosmic-ext-applet-caffeine/package.nix b/pkgs/by-name/co/cosmic-ext-applet-caffeine/package.nix
new file mode 100644
index 000000000000..c219968bdb6f
--- /dev/null
+++ b/pkgs/by-name/co/cosmic-ext-applet-caffeine/package.nix
@@ -0,0 +1,55 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  rustPlatform,
+  libcosmicAppHook,
+  just,
+  nix-update-script,
+}:
+rustPlatform.buildRustPackage {
+  pname = "cosmic-ext-applet-caffeine";
+  version = "2025-09-29";
+
+  src = fetchFromGitHub {
+    owner = "tropicbliss";
+    repo = "cosmic-ext-applet-caffeine";
+    rev = "a43db670e03894ff402fa19eec3d60f7c7bf663c";
+    hash = "sha256-0hIc62FdjIGU028z8/WCx2q317e+PCA25CSibBVi/p0=";
+  };
+
+  cargoHash = "sha256-nl/giMIQ5xNSOgjv67OMWkfuAVtdIcqZDbXC1mYwXBM=";
+
+  nativeBuildInputs = [
+    libcosmicAppHook
+    just
+  ];
+
+  dontUseJustBuild = true;
+  dontUseJustCheck = true;
+
+  justFlags = [
+    "--set"
+    "prefix"
+    (placeholder "out")
+    "--set"
+    "bin-src"
+    "target/${stdenv.hostPlatform.rust.cargoShortTarget}/release/cosmic-ext-applet-caffeine"
+  ];
+
+  passthru.updateScript = nix-update-script {
+    extraArgs = [
+      "--version"
+      "branch=HEAD"
+    ];
+  };
+
+  meta = {
+    description = "Caffeine Applet for the COSMIC desktop";
+    homepage = "https://github.com/tropicbliss/cosmic-ext-applet-caffeine";
+    license = lib.licenses.mit;
+    mainProgram = "cosmic-ext-applet-caffeine";
+    maintainers = [ lib.maintainers.HeitorAugustoLN ];
+    platforms = lib.platforms.linux;
+  };
+}