diff --git a/Tests/DefaultsTests/Defaults+iCloudTests.swift b/Tests/DefaultsTests/Defaults+iCloudTests.swift
index f0531df..cbaebca 100644
--- a/Tests/DefaultsTests/Defaults+iCloudTests.swift
+++ b/Tests/DefaultsTests/Defaults+iCloudTests.swift
@@ -77,6 +77,8 @@ final class DefaultsICloudTests: XCTestCase {
 	func testICloudInitialize() async {
 		let name = Defaults.Key<String>("testICloudInitialize_name", default: "0", iCloud: true)
 		let quality = Defaults.Key<Double>("testICloudInitialize_quality", default: 0.0, iCloud: true)
+		// Not sure why github action will not trigger a observation callback after initialization, cannot reproduce in local.
+		Defaults.iCloud.syncWithoutWaiting()
 		await Defaults.iCloud.sync()
 		XCTAssertEqual(mockStorage.object(forKey: name.name), "0")
 		XCTAssertEqual(mockStorage.object(forKey: quality.name), 0.0)
@@ -180,7 +182,7 @@ final class DefaultsICloudTests: XCTestCase {
 		let quality = Defaults.Key<Double>("testSyncKeysFromLocal_quality", default: 0.0)
 		let name_expected = ["1", "2", "3", "4", "5", "6", "7"]
 		let quality_expected = [1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0]
-		NSUbiquitousKeyValueStore.default.object(forKey: quality.name)
+
 		for index in 0..<name_expected.count {
 			Defaults[name] = name_expected[index]
 			Defaults[quality] = quality_expected[index]
@@ -245,6 +247,8 @@ final class DefaultsICloudTests: XCTestCase {
 	func testICloudInitializeFromDetached() async {
 		let task = Task.detached {
 			let name = Defaults.Key<String>("testICloudInitializeFromDetached_name", default: "0", iCloud: true)
+			// Not sure why github action will not trigger a observation callback after initialization, cannot reproduce in local.
+			Defaults.iCloud.syncWithoutWaiting()
 			await Defaults.iCloud.sync()
 			XCTAssertEqual(mockStorage.object(forKey: name.name), "0")
 		}