diff --git a/x-pack/plugins/ml/server/routes/schemas/calendars_schema.ts b/x-pack/plugins/ml/server/routes/schemas/calendars_schema.ts
index 1ca473d77661a..7b0dead93a629 100644
--- a/x-pack/plugins/ml/server/routes/schemas/calendars_schema.ts
+++ b/x-pack/plugins/ml/server/routes/schemas/calendars_schema.ts
@@ -20,6 +20,9 @@ export const calendarSchema = schema.object({
       description: schema.maybe(schema.string()),
       start_time: schema.oneOf([schema.string(), schema.number()]),
       end_time: schema.oneOf([schema.string(), schema.number()]),
+      skip_result: schema.maybe(schema.boolean()),
+      skip_model_update: schema.maybe(schema.boolean()),
+      force_time_shift: schema.maybe(schema.number()),
     })
   ),
 });