diff --git a/web/api/src/main/resources/definitions/Groups.json b/web/api/src/main/resources/definitions/Groups.json
index 22f36fb..04273e0 100644
--- a/web/api/src/main/resources/definitions/Groups.json
+++ b/web/api/src/main/resources/definitions/Groups.json
@@ -67,6 +67,11 @@
             "description": "types of the group",
             "example": "ALL"
           },
+          "deviceId": {
+            "type": "string",
+            "description": "device identifier",
+            "example": "of:0000000000000003"
+          },
           "appId": {
             "type": "string",
             "description": "application identifier",
@@ -154,4 +159,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}