diff --git a/README.md b/README.md
index 6fce597..b3221a0 100644
--- a/README.md
+++ b/README.md
@@ -11,10 +11,12 @@ Jump to docs: [inventory-app](hackerspace/README.md) / [cameras](_disabled/camti
 Tip: Search the repo for `kind: xyz` for examples.
 
 ## Supporting services
-- Build [Git](https://git.k-space.ee) repositories with [Woodpecker](https://woodpecker.k-space.ee).
+- Build [Git](https://git.k-space.ee) repositories with [Woodpecker](https://woodpecker.k-space.ee)[^nodrone].
 - Passmower: Authz with `kind: OIDCClient` (or `kind: OIDCMiddlewareClient`[^authz]).
 - Traefik[^nonginx]: Expose services with `kind: Service` + `kind: Ingress` (TLS and DNS **included**).
 
+[^nodrone]: Replaces Drone CI.
+
 ### Additional
 - bind: Manage _additional_ DNS records with `kind: DNSEndpoint`.
 - [Prometheus](https://wiki.k-space.ee/en/hosting/monitoring): Collect metrics with `kind: PodMonitor` (alerts with `kind: PrometheusRule`).