diff --git a/ansible/inventory.yaml b/ansible/inventory.yaml
index 08c8564..ebea3dd 100644
--- a/ansible/inventory.yaml
+++ b/ansible/inventory.yaml
@@ -37,6 +37,13 @@ all:
     unprovisioned:
       hosts:
         # host.nc.chaoswg.org: null
+    prometheus:
+      hosts:
+        host.nc.chaoswg.org: null
+        thonkpad.ka.chaoswg.org: null
+        infra.unruhig.eu: null
+        backup.unruhig.eu: null
+        mon1.hel1.chaoswg.org: null
     backup:
       hosts:
         host.nc.chaoswg.org: null