diff --git a/Collectively-owned-instances.md b/Collectively-owned-instances.md
index c12c561..cd231b6 100644
--- a/Collectively-owned-instances.md
+++ b/Collectively-owned-instances.md
@@ -36,6 +36,7 @@ Nowadays more may be listed on https://joinmastodon.org/servers
 
 These may or may not be technically controlled by the non-profit yet, for example the domain name may be registered in the name of an individual, but seem likely to become so where needed.
 
+* [chaos.social](https://chaos.social) - CCC *(Mastodon)*
 * [en.osm.town](https://en.osm.town) - for the OpenStreetMap Community *(Mastodon)*
 * [swiss-chaos.social](https://swiss-chaos.social) - Chaos Computer Club Switzerland *(Mastodon)*