diff --git a/release/models/platform/openconfig-platform-types.yang b/release/models/platform/openconfig-platform-types.yang
index a70b5bd0e..36e254108 100644
--- a/release/models/platform/openconfig-platform-types.yang
+++ b/release/models/platform/openconfig-platform-types.yang
@@ -22,7 +22,13 @@ module openconfig-platform-types {
     "This module defines data types (e.g., YANG identities)
     to support the OpenConfig component inventory model.";
 
-  oc-ext:openconfig-version "1.11.0";
+  oc-ext:openconfig-version "1.12.0";
+
+revision "2025-09-03" {
+    description
+      "Add MIDPLANE";
+    reference "1.12.0";
+  }
 
 revision "2025-09-03" {
     description
@@ -442,6 +448,15 @@ revision "2025-07-09" {
       used to represent a switching ASIC";
   }
 
+  identity MIDPLANE {
+    base OPENCONFIG_HARDWARE_COMPONENT;
+    description
+      "Midplaneis a central, passive, or active circuit board assembly situated
+      in the middle of a chassis. It serves as an interconnect, enabling data
+      transfer between front-facing and rear-facing components and may also
+      distribute power.";
+  }
+
   identity OPERATING_SYSTEM {
     base OPENCONFIG_SOFTWARE_COMPONENT;
     description