diff --git a/yaml/xyz/openbmc_project/Inventory/Item/PCIeDevice.interface.yaml b/yaml/xyz/openbmc_project/Inventory/Item/PCIeDevice.interface.yaml
index a710268..54f0930 100644
--- a/yaml/xyz/openbmc_project/Inventory/Item/PCIeDevice.interface.yaml
+++ b/yaml/xyz/openbmc_project/Inventory/Item/PCIeDevice.interface.yaml
@@ -287,3 +287,9 @@
       type: string
       description: >
           The name of the Manufacturer for this device.
+
+    - name: MaxLanes
+      type: size
+      default: 0
+      description: >
+          The maximum number of PCIe lanes supported by the PCIe Device