diff --git a/inventory.yml b/inventory.yml
index ece7fa4..e7c8c54 100644
--- a/inventory.yml
+++ b/inventory.yml
@@ -13,6 +13,13 @@ all:
     unicorn.n39.eu:
 
   children:
+    docker_host:
+      hosts:
+        krypton.n39.eu:
+        pottwal.n39.eu:
+        radon.n39.eu:
+        tau.netz39.de:
+        unicorn.n39.eu:
     proxmox:
       hosts:
         holmium.n39.eu: