diff --git a/src/mastodon/v1/repositories/marker-repository.ts b/src/mastodon/v1/repositories/marker-repository.ts
index 5eb2bdada..a752f8049 100644
--- a/src/mastodon/v1/repositories/marker-repository.ts
+++ b/src/mastodon/v1/repositories/marker-repository.ts
@@ -16,7 +16,7 @@ export interface FetchMarkersParams {
 
 export type CreateMarkersParams = {
   readonly /** ID of the last status read in the timeline. */
-  [key in MarkerTimeline]: Pick<MarkerItem, 'lastReadId'>;
+  [key in MarkerTimeline]?: Pick<MarkerItem, 'lastReadId'>;
 };
 
 export class MarkerRepository