diff --git a/webui/eslint.config.js b/webui/eslint.config.js
index 8378b436..00e29960 100644
--- a/webui/eslint.config.js
+++ b/webui/eslint.config.js
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import js from "@eslint/js";
 import tseslint from "typescript-eslint";
 import solid from "eslint-plugin-solid";
diff --git a/webui/package.json b/webui/package.json
index 495246b8..942ca003 100644
--- a/webui/package.json
+++ b/webui/package.json
@@ -23,7 +23,7 @@
   },
   "dependencies": {
     "@eslint/js": "^9.39.2",
-    "@material/material-color-utilities": "^0.3.0",
+    "@material/material-color-utilities": "^0.4.0",
     "@material/web": "^2.4.1",
     "kernelsu": "^3.0.0",
     "solid-js": "^1.9.10",
diff --git a/webui/pnpm-lock.yaml b/webui/pnpm-lock.yaml
index 761787cc..e97f3b1b 100644
--- a/webui/pnpm-lock.yaml
+++ b/webui/pnpm-lock.yaml
@@ -12,8 +12,8 @@ importers:
         specifier: ^9.39.2
         version: 9.39.2
       '@material/material-color-utilities':
-        specifier: ^0.3.0
-        version: 0.3.0
+        specifier: ^0.4.0
+        version: 0.4.0
       '@material/web':
         specifier: ^2.4.1
         version: 2.4.1
@@ -367,8 +367,8 @@ packages:
   '@lit/reactive-element@2.1.2':
     resolution: {integrity: sha512-pbCDiVMnne1lYUIaYNN5wrwQXDtHaYtg7YEFPeW+hws6U47WeFvISGUWekPGKWOP1ygrs0ef0o1VJMk1exos5A==}
 
-  '@material/material-color-utilities@0.3.0':
-    resolution: {integrity: sha512-ztmtTd6xwnuh2/xu+Vb01btgV8SQWYCaK56CkRK8gEkWe5TuDyBcYJ0wgkMRn+2VcE9KUmhvkz+N9GHrqw/C0g==}
+  '@material/material-color-utilities@0.4.0':
+    resolution: {integrity: sha512-dlq6VExJReb8dhjj3a/yTigr3ncNwoFmL5Iy2ENtbDX03EmNeOEdZ+vsaGrj7RTuO+mB7L58II4LCsl4NpM8uw==}
 
   '@material/web@2.4.1':
     resolution: {integrity: sha512-0sk9t25acJ72Qv3r0n9r0lgDbPaAKnpm0p+QmEAAwYyZomHxuVbgrrAdtNXaRm7jFyGh+WsTr8bhtvCnpPRFjw==}
@@ -1463,7 +1463,7 @@ snapshots:
     dependencies:
       '@lit-labs/ssr-dom-shim': 1.5.1
 
-  '@material/material-color-utilities@0.3.0': {}
+  '@material/material-color-utilities@0.4.0': {}
 
   '@material/web@2.4.1':
     dependencies:
diff --git a/webui/src/app.css b/webui/src/app.css
index a205a243..f6b339d9 100644
--- a/webui/src/app.css
+++ b/webui/src/app.css
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 :root {
   --md-sys-shape-corner-medium: 12px;
   --md-sys-shape-corner-large: 16px;
diff --git a/webui/src/components/Skeleton.tsx b/webui/src/components/Skeleton.tsx
index 4684bd59..05146ff5 100644
--- a/webui/src/components/Skeleton.tsx
+++ b/webui/src/components/Skeleton.tsx
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import "./Skeleton.css";
 
 interface Props {
diff --git a/webui/src/components/TopBar.css b/webui/src/components/TopBar.css
index 0ad8d5b8..d9e2c92a 100644
--- a/webui/src/components/TopBar.css
+++ b/webui/src/components/TopBar.css
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 .top-bar {
   flex-shrink: 0;
   background-color: var(--md-sys-color-surface-container);
diff --git a/webui/src/components/TopBar.tsx b/webui/src/components/TopBar.tsx
index c55f92ab..b0e4ac08 100644
--- a/webui/src/components/TopBar.tsx
+++ b/webui/src/components/TopBar.tsx
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import { Show, For } from "solid-js";
 import { store } from "../lib/store";
 import { ICONS } from "../lib/constants";
diff --git a/webui/src/lib/api.mock.ts b/webui/src/lib/api.mock.ts
index 383bd2ea..122d312f 100644
--- a/webui/src/lib/api.mock.ts
+++ b/webui/src/lib/api.mock.ts
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import { APP_VERSION } from "./constants_gen";
 import { DEFAULT_CONFIG } from "./constants";
 import type {
diff --git a/webui/src/lib/api.ts b/webui/src/lib/api.ts
index e9b9e431..f128daa4 100644
--- a/webui/src/lib/api.ts
+++ b/webui/src/lib/api.ts
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import { DEFAULT_CONFIG, PATHS } from "./constants";
 import { APP_VERSION } from "./constants_gen";
 import { MockAPI } from "./api.mock";
diff --git a/webui/src/lib/store.ts b/webui/src/lib/store.ts
index bf751f58..40ae28e5 100644
--- a/webui/src/lib/store.ts
+++ b/webui/src/lib/store.ts
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import { createSignal, createMemo, createEffect, createRoot } from "solid-js";
 import { API } from "./api";
 import { DEFAULT_CONFIG, DEFAULT_SEED } from "./constants";
diff --git a/webui/src/lib/theme.ts b/webui/src/lib/theme.ts
index 58c1dfba..a3034964 100644
--- a/webui/src/lib/theme.ts
+++ b/webui/src/lib/theme.ts
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import {
   argbFromHex,
   hexFromArgb,
diff --git a/webui/src/material-web.d.ts b/webui/src/material-web.d.ts
index 6e7731c2..eb17df35 100644
--- a/webui/src/material-web.d.ts
+++ b/webui/src/material-web.d.ts
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import type { JSX } from "solid-js";
 
 type BaseProps = JSX.HTMLAttributes<HTMLElement>;
diff --git a/webui/src/routes/GranaryTab.tsx b/webui/src/routes/GranaryTab.tsx
index dd805072..01d48535 100644
--- a/webui/src/routes/GranaryTab.tsx
+++ b/webui/src/routes/GranaryTab.tsx
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import { createSignal, createMemo, onMount, Show, For } from "solid-js";
 import { API } from "../lib/api";
 import { store } from "../lib/store";
diff --git a/webui/src/routes/InfoTab.tsx b/webui/src/routes/InfoTab.tsx
index 5fc81efd..1d6c6bdf 100644
--- a/webui/src/routes/InfoTab.tsx
+++ b/webui/src/routes/InfoTab.tsx
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import { createSignal, onMount, Show, For, createMemo } from "solid-js";
 import { store } from "../lib/store";
 import { API } from "../lib/api";