diff --git a/syncapi/storage/shared/syncserver.go b/syncapi/storage/shared/syncserver.go
index 48be098fb..6fe0f4314 100644
--- a/syncapi/storage/shared/syncserver.go
+++ b/syncapi/storage/shared/syncserver.go
@@ -629,6 +629,7 @@ func (d *Database) addReceiptDeltaToResponse(
 			}
 			read.User[receipt.UserID] = eduAPI.ReceiptTS{TS: receipt.Timestamp}
 			content[receipt.EventID] = read
+			res.NextBatch.ReceiptPosition++
 		}
 		ev.Content, err = json.Marshal(content)
 		if err != nil {
diff --git a/syncapi/sync/requestpool.go b/syncapi/sync/requestpool.go
index df3f86091..c3637f177 100644
--- a/syncapi/sync/requestpool.go
+++ b/syncapi/sync/requestpool.go
@@ -325,6 +325,7 @@ func (rp *RequestPool) currentSyncForUser(req syncRequest, latestPos types.Strea
 		// Add the updates into the sync response.
 		for _, event := range events {
 			res.ToDevice.Events = append(res.ToDevice.Events, event.SendToDeviceEvent)
+			res.NextBatch.SendToDevicePosition++
 		}
 	}