diff --git a/doc/starlight/astro.config.mjs b/doc/starlight/astro.config.mjs
index 96e5965add..3c79260dcf 100644
--- a/doc/starlight/astro.config.mjs
+++ b/doc/starlight/astro.config.mjs
@@ -24,6 +24,11 @@ export default defineConfig({
           label: "Matrix",
           href: "https://matrix.to/#/#riot-os:matrix.org",
         },
+        {
+          icon: "discourse",
+          label: "Forum",
+          href: "https://forum.riot-os.org",
+        },
       ],
       sidebar: [
         {