diff --git a/yaml/xyz/openbmc_project/Inventory/Item/Cpu.interface.yaml b/yaml/xyz/openbmc_project/Inventory/Item/Cpu.interface.yaml
index 0f40ee9..70e5718 100644
--- a/yaml/xyz/openbmc_project/Inventory/Item/Cpu.interface.yaml
+++ b/yaml/xyz/openbmc_project/Inventory/Item/Cpu.interface.yaml
@@ -37,6 +37,14 @@
       type: uint16
       description: >
           The maximum number of threads the processor can support.
+    - name: Step
+      type: string
+      description: >
+          The step value for this processor
+    - name: Microcode
+      type: string
+      description: >
+          The microcode information for this processor
 
 enumerations:
     - name: Capability
@@ -61,4 +69,4 @@
               Support enhanced virtualization.
         - name: PowerPerformanceControl
           description: >
-              Support power/performance control.
\ No newline at end of file
+              Support power/performance control.