diff --git a/README.md b/README.md
index 0c5b7f90fb..6d46f228c8 100644
--- a/README.md
+++ b/README.md
@@ -191,6 +191,6 @@ https://www.riot-os.org
 [stackoverflow-badge]: https://img.shields.io/badge/stackoverflow-%5Briot--os%5D-yellow
 [stackoverflow-link]: https://stackoverflow.com/questions/tagged/riot-os
 [mastodon-badge]: https://img.shields.io/badge/social-Mastodon-informational.svg
-[mastodon-link]: https://fosstodon.org/@RIOT_OS
+[mastodon-link]: https://floss.social/@RIOT_OS
 [wiki-badge]: https://img.shields.io/badge/docs-Wiki-informational.svg
 [wiki-link]: https://github.com/RIOT-OS/RIOT/wiki
diff --git a/doc/doxygen/src/mainpage.md b/doc/doxygen/src/mainpage.md
index 98f7da3d08..356ecd8727 100644
--- a/doc/doxygen/src/mainpage.md
+++ b/doc/doxygen/src/mainpage.md
@@ -46,7 +46,7 @@ RIOT is developed by an open community that anyone is welcome to join:
  - Contact us on Matrix for live support and discussions:
    [riot-os:matrix.org](https://matrix.to/#/#riot-os:matrix.org)
 
-[mastodon-link]: https://fosstodon.org/@RIOT_OS
+[mastodon-link]: https://floss.social/@RIOT_OS
 
 The quickest start                                        {#the-quickest-start}
 ==================
diff --git a/doc/guides/index.md b/doc/guides/index.md
index 99bf878e84..b113ab549b 100644
--- a/doc/guides/index.md
+++ b/doc/guides/index.md
@@ -49,4 +49,4 @@ RIOT is developed by an open community that anyone is welcome to join:
 - Contact us on Matrix for live support and discussions:
   [riot-os:matrix.org](https://matrix.to/#/#riot-os:matrix.org)
 
-[mastodon-link]: https://fosstodon.org/@RIOT_OS
+[mastodon-link]: https://floss.social/@RIOT_OS
diff --git a/doc/starlight/astro.config.mjs b/doc/starlight/astro.config.mjs
index ffb80294e4..02c2f180be 100644
--- a/doc/starlight/astro.config.mjs
+++ b/doc/starlight/astro.config.mjs
@@ -17,7 +17,7 @@ export default defineConfig({
         {
           icon: "mastodon",
           label: "Mastodon",
-          href: "https://fosstodon.org/@RIOT_OS",
+          href: "https://floss.social/@RIOT_OS",
         },
         {
           icon: "matrix",