diff --git a/models/augments/common-augments.yang b/models/augments/common-augments.yang
index 0467bc2..f1235eb 100644
--- a/models/augments/common-augments.yang
+++ b/models/augments/common-augments.yang
@@ -563,6 +563,7 @@
             enum GT; // greater than
             enum LT; // less than
             enum EQ; // equal
+            enum NE; // not equal
         }
     }
 
diff --git a/models/yang/mano-types.yang b/models/yang/mano-types.yang
index eb38ec2..7fc0e50 100644
--- a/models/yang/mano-types.yang
+++ b/models/yang/mano-types.yang
@@ -1937,6 +1937,7 @@
       enum GT; // greater than
       enum LT; // less than
       enum EQ; // equal
+      enum NE; // not equal
     }
   }