diff --git a/packages/trpc/server/routers/viewer/eventTypes/update.handler.ts b/packages/trpc/server/routers/viewer/eventTypes/update.handler.ts
index a00f679853..42c99df06e 100644
--- a/packages/trpc/server/routers/viewer/eventTypes/update.handler.ts
+++ b/packages/trpc/server/routers/viewer/eventTypes/update.handler.ts
@@ -198,6 +198,7 @@ export const updateHandler = async ({ ctx, input }: UpdateOptions) => {
     metadata: rest.metadata === null ? Prisma.DbNull : (rest.metadata as Prisma.InputJsonObject),
     eventTypeColor: eventTypeColor === null ? Prisma.DbNull : (eventTypeColor as Prisma.InputJsonObject),
     disableGuests: guestsField?.hidden ?? false,
+    seatsPerTimeSlot,
   };
   data.locations = locations ?? undefined;