diff --git a/CloudKitExtras/Sources/CloudKitExtras/CloudKitZone.swift b/CloudKitExtras/Sources/CloudKitExtras/CloudKitZone.swift
index 3a2329a13..8de2f22ef 100644
--- a/CloudKitExtras/Sources/CloudKitExtras/CloudKitZone.swift
+++ b/CloudKitExtras/Sources/CloudKitExtras/CloudKitZone.swift
@@ -917,7 +917,7 @@ public protocol CloudKitZone: AnyObject {
 					var recordToSaveChunks = recordsToSave.chunked(into: 200)
 					var recordIDsToDeleteChunks = recordIDsToDelete.chunked(into: 200)
 
-					func saveChunks(completion: @escaping (Result<Void, Error>) -> Void) {
+					@MainActor func saveChunks(completion: @escaping (Result<Void, Error>) -> Void) {
 						if !recordToSaveChunks.isEmpty {
 							let records = recordToSaveChunks.removeFirst()