diff --git a/package-lock.json b/package-lock.json
index 47cc82e..8b679eb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,7 +14,7 @@
 				"@langchain/langgraph": "^1.4.8",
 				"buffer": "^6.0.3",
 				"isomorphic-git": "^1.38.10",
-				"lucide-svelte": "^0.577.0",
+				"lucide-svelte": "^1.0.1",
 				"mermaid": "^11.16.0",
 				"zod": "^4.4.3"
 			},
@@ -6247,9 +6247,10 @@
 			"license": "Apache-2.0"
 		},
 		"node_modules/lucide-svelte": {
-			"version": "0.577.0",
-			"resolved": "https://registry.npmjs.org/lucide-svelte/-/lucide-svelte-0.577.0.tgz",
-			"integrity": "sha512-0i88o57KsaHWnc80J57fY99CWzlZsSdtH5kKjLUJa7z8dum/9/AbINNLzJ7NiRFUdOgMnfAmJt8jFbW2zeC5qQ==",
+			"version": "1.0.1",
+			"resolved": "https://registry.npmjs.org/lucide-svelte/-/lucide-svelte-1.0.1.tgz",
+			"integrity": "sha512-WvzZgk0pqzgda+AErLvgWxHkfg/+GgUwqKMRHvzt0IqyMdmyEDzDCk3Z+Wo/3y753oIgx8u9Q4eUbWkghFa8Jg==",
+			"deprecated": "Package deprecated. Please use @lucide/svelte instead.",
 			"license": "ISC",
 			"peerDependencies": {
 				"svelte": "^3 || ^4 || ^5.0.0-next.42"
diff --git a/package.json b/package.json
index cafcde4..2a3ca37 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
 		"@langchain/langgraph": "^1.4.8",
 		"buffer": "^6.0.3",
 		"isomorphic-git": "^1.38.10",
-		"lucide-svelte": "^0.577.0",
+		"lucide-svelte": "^1.0.1",
 		"mermaid": "^11.16.0",
 		"zod": "^4.4.3"
 	}
diff --git a/src/lib/components/layout/Header.svelte b/src/lib/components/layout/Header.svelte
index 4e5f258..7a99778 100644
--- a/src/lib/components/layout/Header.svelte
+++ b/src/lib/components/layout/Header.svelte
@@ -1,16 +1,8 @@
 <script lang="ts">
 	import { tick } from 'svelte';
-	import {
-		Sun,
-		Moon,
-		ScrollText,
-		Github,
-		Gamepad2,
-		Bot,
-		X,
-		Linkedin,
-		RotateCcw
-	} from 'lucide-svelte';
+	import { Sun, Moon, ScrollText, Gamepad2, Bot, X, RotateCcw } from 'lucide-svelte';
+	import Github from '$lib/components/ui/GithubIcon.svelte';
+	import Linkedin from '$lib/components/ui/LinkedinIcon.svelte';
 	import { base } from '$app/paths';
 	import Search from './Search.svelte';
 	import ThreadRail from './ThreadRail.svelte';
diff --git a/src/lib/components/ui/GithubIcon.svelte b/src/lib/components/ui/GithubIcon.svelte
new file mode 100644
index 0000000..123f612
--- /dev/null
+++ b/src/lib/components/ui/GithubIcon.svelte
@@ -0,0 +1,30 @@
+<script lang="ts">
+	/**
+	 * Lucide dropped its brand icons in v1 — a deliberate trademark decision, not
+	 * an oversight, so they are not coming back. The geometry below is lucide's
+	 * own `github` icon, kept verbatim: every other icon in the header is a
+	 * 24×24 lucide outline, and a filled brand mark next to them would read as a
+	 * mismatch. Same viewBox, stroke and cap settings as the icons around it.
+	 *
+	 * Artwork © Lucide Contributors, ISC licensed — https://lucide.dev
+	 */
+	let { size = 24 }: { size?: number | string } = $props();
+</script>
+
+<svg
+	xmlns="http://www.w3.org/2000/svg"
+	width={size}
+	height={size}
+	viewBox="0 0 24 24"
+	fill="none"
+	stroke="currentColor"
+	stroke-width="2"
+	stroke-linecap="round"
+	stroke-linejoin="round"
+	aria-hidden="true"
+>
+	<path
+		d="M15 22v-4a4.8 4.8 0 0 0-1-3.5c3 0 6-2 6-5.5.08-1.25-.27-2.48-1-3.5.28-1.15.28-2.35 0-3.5 0 0-1 0-3 1.5-2.64-.5-5.36-.5-8 0C6 2 5 2 5 2c-.3 1.15-.3 2.35 0 3.5A5.403 5.403 0 0 0 4 9c0 3.5 3 5.5 6 5.5-.39.49-.68 1.05-.85 1.65-.17.6-.22 1.23-.15 1.85v4"
+	/>
+	<path d="M9 18c-4.51 2-5-2-7-2" />
+</svg>
diff --git a/src/lib/components/ui/LinkedinIcon.svelte b/src/lib/components/ui/LinkedinIcon.svelte
new file mode 100644
index 0000000..a16ff50
--- /dev/null
+++ b/src/lib/components/ui/LinkedinIcon.svelte
@@ -0,0 +1,27 @@
+<script lang="ts">
+	/**
+	 * Companion to [GithubIcon]: lucide removed its brand icons in v1, so this
+	 * keeps lucide's own `linkedin` geometry to match the outline icons beside
+	 * it. See GithubIcon.svelte for the full reasoning.
+	 *
+	 * Artwork © Lucide Contributors, ISC licensed — https://lucide.dev
+	 */
+	let { size = 24 }: { size?: number | string } = $props();
+</script>
+
+<svg
+	xmlns="http://www.w3.org/2000/svg"
+	width={size}
+	height={size}
+	viewBox="0 0 24 24"
+	fill="none"
+	stroke="currentColor"
+	stroke-width="2"
+	stroke-linecap="round"
+	stroke-linejoin="round"
+	aria-hidden="true"
+>
+	<path d="M16 8a6 6 0 0 1 6 6v7h-4v-7a2 2 0 0 0-2-2 2 2 0 0 0-2 2v7h-4v-7a6 6 0 0 1 6-6z" />
+	<rect width="4" height="12" x="2" y="9" />
+	<circle cx="4" cy="4" r="2" />
+</svg>
diff --git a/src/routes/parts/[slug]/+page.svelte b/src/routes/parts/[slug]/+page.svelte
index 0fe74bb..5365827 100644
--- a/src/routes/parts/[slug]/+page.svelte
+++ b/src/routes/parts/[slug]/+page.svelte
@@ -1,7 +1,8 @@
 <script lang="ts">
 	import { base, resolve } from '$app/paths';
 	import { goto } from '$app/navigation';
-	import { ArrowLeft, ArrowRight, BookOpen, Github } from 'lucide-svelte';
+	import { ArrowLeft, ArrowRight, BookOpen } from 'lucide-svelte';
+	import Github from '$lib/components/ui/GithubIcon.svelte';
 	import { courseEntry } from '$lib/data/sidebar-nav';
 	import { SITE_URL } from '$lib/data/part-pages';