diff --git a/ansible/inventory b/ansible/inventory
index 17f9a4f..6b24654 100644
--- a/ansible/inventory
+++ b/ansible/inventory
@@ -19,9 +19,15 @@ monitoring.ooni.org
 notebook.ooni.org
 data1.htz-fsn.prod.ooni.nu
 data3.htz-fsn.prod.ooni.nu
+#backend-fsn.ooni.org
+
+[htz_hel]
+backend-hel.ooni.org
 
 [ghs_ams]
 openvpn-server1.ooni.io
 ams-slack-1.ooni.org
+ams-ps.ooni.nu
+# currently disabled due to them not supporting ed25519 keys
 #mia-echoth.ooni.nu
 #mia-httpth.ooni.nu