diff --git a/web/app/components/workflow/nodes/trigger-schedule/types.ts b/web/app/components/workflow/nodes/trigger-schedule/types.ts
index bb0d1abc3c..3d82709199 100644
--- a/web/app/components/workflow/nodes/trigger-schedule/types.ts
+++ b/web/app/components/workflow/nodes/trigger-schedule/types.ts
@@ -16,5 +16,5 @@ export type ScheduleTriggerNodeType = CommonNodeType & {
   frequency?: ScheduleFrequency
   cron_expression?: string
   visual_config?: VisualConfig
-  timezone: string
+  timezone?: string
 }