diff --git a/by-topic.md b/by-topic.md
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@@ -2729,6 +2729,7 @@
 
 ## others 
 
+- [nix-community/authentik-nix](https://github.com/nix-community/authentik-nix) - Nix flake with package, NixOS module and VM test for authentik. Alternative deployment mode to the official docker-compose approach. No official support by authentik [maintainers=@willibutz @ma27]
 - [metaodi/openerz](https://github.com/metaodi/openerz) - OpenERZ is an open API to the waste collection of many different municipalities in Switzerland (e.g. Zurich, Basel, St. Gallen, Uster, Thalwil, Adliswil, Horgen etc.)
 - [thinkst/canarytokens](https://github.com/thinkst/canarytokens) - Canarytokens helps track activity and actions on your network.
 - [imputnet/helium-linux](https://github.com/imputnet/helium-linux) - Helium Browser for Linux