diff --git a/release/models/system/openconfig-system.yang b/release/models/system/openconfig-system.yang
index c4e929a163..f191d38339 100644
--- a/release/models/system/openconfig-system.yang
+++ b/release/models/system/openconfig-system.yang
@@ -48,7 +48,13 @@ module openconfig-system {
     Section 4.c of the IETF Trust's Legal Provisions Relating
     to IETF Documents (http://trustee.ietf.org/license-info).";
 
-  oc-ext:openconfig-version "3.0.0";
+  oc-ext:openconfig-version "3.1.0";
+
+  revision "2026-03-31" {
+    description
+      "Added a leaf for available memory.";
+    reference "3.1.0";
+  }
 
   revision "2025-07-08" {
     description
@@ -1159,6 +1165,17 @@ module openconfig-system {
       description
         "Memory that is not used and is available for allocation.";
     }
+
+    leaf available {
+      type uint64;
+      units bytes;
+      description
+        "The amount of memory that is available for use.
+
+        In addition to the memory reported by free, this leaf also includes
+        memory used for system caches and buffers that can be
+        reclaimed by the operating system.";
+    }
   }
 
   grouping system-memory-error-counters {