diff --git a/netbox_proxmox_sync/api/proxmox/create.py b/netbox_proxmox_sync/api/proxmox/create.py
index 5deb1c0480aece69ffe4039071ba77bdcbe34247..d14b3b4bc93eb3786dde4ed4134fc847f39376a5 100644
--- a/netbox_proxmox_sync/api/proxmox/create.py
+++ b/netbox_proxmox_sync/api/proxmox/create.py
@@ -63,7 +63,7 @@ def create_tags_and_custom_fields(proxmox_tags):
         'ui_visible': 'always',
         'filter_logic': 'exact',
         'type': 'integer',
-        'content_types': ['virtualization.virtualmachine']
+        'object_types': ['virtualization.virtualmachine']
     }]
     # Create stuff :)
     try:
diff --git a/netbox_proxmox_sync/api/proxmox/delete.py b/netbox_proxmox_sync/api/proxmox/delete.py
index 1a7cf552cb3653c4659670a27c7b536543e07301..fca5c60bdc0100292f631cf7805008f493bd5734 100644
--- a/netbox_proxmox_sync/api/proxmox/delete.py
+++ b/netbox_proxmox_sync/api/proxmox/delete.py
@@ -21,7 +21,7 @@ def all():
             content_types=['virtualization.virtualmachines'],
         )]
         netbox_custom_fields = [dict(f) for f in NETBOX_API.extras.custom_fields.filter(
-            content_types=['virtualization.virtualmachine'],
+            object_types=['virtualization.virtualmachine'],
         )]
     except Exception:
         raise APIError(f'Failed to fetch all "{cluster["name"]}" cluster information!')