diff --git a/OpenAPI/genericNrm.yaml b/OpenAPI/genericNrm.yaml
index ad5068132af2cec2761cdb40d1fee8009062f9d7..8e30150998f0dda37d6c13a2b5b8ddad9de33348 100755
--- a/OpenAPI/genericNrm.yaml
+++ b/OpenAPI/genericNrm.yaml
@@ -42,6 +42,9 @@ components:
           $ref: 'comDefs.yaml#/components/schemas/Latitude'
         siteLongitude:
           $ref: 'comDefs.yaml#/components/schemas/Longitude'
+        siteAltitude:
+          type: number
+          format: float
         equipmentType:
           type: string
         environmentType: