diff --git a/yaml/xyz/openbmc_project/Inventory/Item/PCIeDevice.interface.yaml b/yaml/xyz/openbmc_project/Inventory/Item/PCIeDevice.interface.yaml
index e4e4f84..e8e92e7 100644
--- a/yaml/xyz/openbmc_project/Inventory/Item/PCIeDevice.interface.yaml
+++ b/yaml/xyz/openbmc_project/Inventory/Item/PCIeDevice.interface.yaml
@@ -294,6 +294,12 @@
       description: >
           The maximum number of PCIe lanes supported by the PCIe Device
 
+    - name: LanesInUse
+      type: size
+      default: 0
+      description: >
+          The number of PCIe lanes in use by this device.
+
 associations:
     - name: upstream_pcie_slot
       description: >