diff --git a/apps/webapp/app/v3/services/upsertTaskSchedule.server.ts b/apps/webapp/app/v3/services/upsertTaskSchedule.server.ts
index 46e3c68d8..b46fd17a9 100644
--- a/apps/webapp/app/v3/services/upsertTaskSchedule.server.ts
+++ b/apps/webapp/app/v3/services/upsertTaskSchedule.server.ts
@@ -215,7 +215,8 @@ export class UpsertTaskScheduleService extends BaseService {
     });
 
     const scheduleHasChanged =
-      scheduleRecord.generatorExpression !== existingSchedule.generatorExpression;
+      scheduleRecord.generatorExpression !== existingSchedule.generatorExpression ||
+      scheduleRecord.timezone !== existingSchedule.timezone;
 
     // find the existing instances
     const existingInstances = await tx.taskScheduleInstance.findMany({