diff --git a/module/netbox/object_classes.py b/module/netbox/object_classes.py
index dd84862f..8cb8ff82 100644
--- a/module/netbox/object_classes.py
+++ b/module/netbox/object_classes.py
@@ -1624,6 +1624,7 @@ class NBVM(NetBoxObject):
     def __init__(self, *args, **kwargs):
         self.data_model = {
             "name": 64,
+            "serial": 50,
             "status": ["offline", "active", "planned", "staged", "failed", "decommissioning"],
             "cluster": NBCluster,
             "role": NBDeviceRole,
diff --git a/module/sources/vmware/connection.py b/module/sources/vmware/connection.py
index f8f8bfd8..27c177c8 100644
--- a/module/sources/vmware/connection.py
+++ b/module/sources/vmware/connection.py
@@ -2196,6 +2196,10 @@ def add_virtual_machine(self, obj):
                                        if isinstance(comp, vim.vm.device.VirtualDisk)
                                        ]) / 1024 / 1024)
 
+        # Add adaptation for the new 'serial' field in NetBox 4.1.0 VM model
+        if version.parse(self.inventory.netbox_api_version) >= version.parse("4.1.0"):
+            vm_data["serial"] = vm_uuid
+
         if platform is not None:
             vm_data["platform"] = {"name": platform}
         if annotation is not None: