diff --git a/patches/tailscale.yaml b/patches/tailscale.yaml
index 3b0bab4..fbd6fb3 100644
--- a/patches/tailscale.yaml
+++ b/patches/tailscale.yaml
@@ -3,5 +3,5 @@ kind: ExtensionServiceConfig
 name: tailscale
 environment:
   - TS_AUTHKEY={{ config.tailscale.authKey }}
-  - TS_EXTRA_ARGS=--login-server {{ config.tailscale.loginServer }}
+  - TS_EXTRA_ARGS=--login-server {{ config.tailscale.loginServer }} --advertise-tags=tag:cluster-{{ node.cluster.name }}
   - TS_ROUTES={{ helper.tailscale_subnet(node.gateway, node.netmask) }}