diff --git a/maintainers/onboarding.md b/maintainers/onboarding.md
index d7491db16..311cc64e6 100644
--- a/maintainers/onboarding.md
+++ b/maintainers/onboarding.md
@@ -3,5 +3,9 @@
 
 - https://github.com/NixOS/nixos-homepage/
 - https://github.com/orgs/NixOS/teams/nix-team
-- Matrix room
+- Matrix rooms
+  - [private] Nix maintainer team
+  - Nix ∪ Lix devs (also private)
+  - any open security issues if present and needed
+
 - Team member should subscribe to notifications for the [Nix development category on Discourse](https://discourse.nixos.org/c/dev/nix/50)