diff --git a/sites.yml b/sites.yml
index 8a79922..a76a09b 100644
--- a/sites.yml
+++ b/sites.yml
@@ -1520,19 +1520,34 @@ sites:
       on steroids.
     maintainers:
       - "[Tobias Pietzsch](https://imagej.net/people/tpietzsch)"
-      - "[Jean-Yves Tinevez](https://imagej.net/people/tinevez)"
+      - "[Jean-Yves Tinevez](https://imagej.net/people/tinevez)"      
 
   - name: "Mastodon-DeepLineage"
     id: "Mastodon-DeepLineage"
     url: "https://sites.imagej.net/Mastodon-DeepLineage/"
     description: >-
       [Mastodon-DeepLineage](https://github.com/mastodon-sc/mastodon-deep-lineage)
-      is an extension for the Mastodon plugin and can only be used in conjunction
-      with it. Mastodon allows track cell lineages in 3D+t images.
+      provides an extension for the Mastodon plugin and can only be used in conjunction
+      with it. Mastodon allows tracking cell lineages in 3D+t images.
       Mastodon-DeepLineage extends this with a collection of tools to analyse
       lineages of tracked objects.
+    maintainers: 
+      - "[Stefan Hahmann](https://imagej.net/people/stefanhahmann)"
+      - "[Matthias Arzt](https://imagej.net/people/maarzt)"
+
+  - name: "Mastodon-Tomancak"
+    id: "Mastodon-Tomancak"
+    url: "https://sites.imagej.net/Mastodon-Tomancak/"
+    description: >-
+      [Mastodon-Tomancak](https://github.com/mastodon-sc/mastodon) provides extensions 
+      for the Mastodon plugin and can only be used in conjunction with it.
+      Mastodon allows tracking cell lineages in 3D+t images.
+      Mastodon-Tomancak extends this with a collection of tools to edit, analyse and visualise
+      lineages of tracked objects.
     maintainers:
+      - "[Matthias Arzt](https://imagej.net/people/maarzt)"
       - "[Stefan Hahmann](https://imagej.net/people/stefanhahmann)"
+      - "[Vladimír Ulman](https://imagej.net/people/xulman)"
 
   - name: "Mcat"
     id: "Mcat"