diff --git a/schemas/legacy.json b/schemas/legacy.json
index cb2a978..47a6c7b 100644
--- a/schemas/legacy.json
+++ b/schemas/legacy.json
@@ -682,6 +682,9 @@
                         "Direction": {
                             "type": "string"
                         },
+                        "Hysteresis": {
+                            "type": "number"
+                        },
                         "Label": {
                             "type": "string"
                         },