diff --git a/Package.swift b/Package.swift
index 3676cb4..f70f52c 100644
--- a/Package.swift
+++ b/Package.swift
@@ -6,12 +6,12 @@ import PackageDescription
 let package = Package(
     name: "Occurrence",
     platforms: [
-        .macOS(.v13),
-        .macCatalyst(.v16),
-        .iOS(.v16),
-        .tvOS(.v16),
-        .watchOS(.v9),
-        .visionOS(.v1), // .v2 ~ iOS 18
+        .macOS(.v15),
+        .macCatalyst(.v18),
+        .iOS(.v18),
+        .tvOS(.v18),
+        .watchOS(.v11),
+        .visionOS(.v2),
     ],
     products: [
         // Products define the executables and libraries a package produces, and make them visible to other packages.
diff --git a/Sources/Occurrence/CoreData/CoreDataLogProvider.swift b/Sources/Occurrence/CoreData/CoreDataLogProvider.swift
index 64ae277..36953b1 100644
--- a/Sources/Occurrence/CoreData/CoreDataLogProvider.swift
+++ b/Sources/Occurrence/CoreData/CoreDataLogProvider.swift
@@ -1,8 +1,8 @@
 import Foundation
 import Logging
-import Mutex
 #if canImport(CoreData)
 @preconcurrency import CoreData
+import Synchronization
 
 final class CoreDataLogProvider: LogProvider {
 
diff --git a/Sources/Occurrence/CoreData/LogModel.swift b/Sources/Occurrence/CoreData/LogModel.swift
index 3086da1..e4cb640 100644
--- a/Sources/Occurrence/CoreData/LogModel.swift
+++ b/Sources/Occurrence/CoreData/LogModel.swift
@@ -1,7 +1,7 @@
 import Foundation
-import Mutex
 #if canImport(CoreData)
 import CoreData
+import Synchronization
 
 enum LogModel {
     case version_1_0_0
diff --git a/Sources/Occurrence/Occurrence.swift b/Sources/Occurrence/Occurrence.swift
index e5d2688..c20e005 100644
--- a/Sources/Occurrence/Occurrence.swift
+++ b/Sources/Occurrence/Occurrence.swift
@@ -1,6 +1,10 @@
 import Foundation
 import Logging
+#if canImport(Synchronization)
+import Synchronization
+#else
 import Mutex
+#endif
 
 public struct Occurrence: LogHandler {
 
diff --git a/Sources/Occurrence/Streamer/OccurrenceLogStreamer.swift b/Sources/Occurrence/Streamer/OccurrenceLogStreamer.swift
index 940a571..3f0a992 100644
--- a/Sources/Occurrence/Streamer/OccurrenceLogStreamer.swift
+++ b/Sources/Occurrence/Streamer/OccurrenceLogStreamer.swift
@@ -1,6 +1,10 @@
 import Foundation
 import Logging
+#if canImport(Synchronization)
+import Synchronization
+#else
 import Mutex
+#endif
 
 final class OccurrenceLogStreamer: LogStreamer {
 
diff --git a/Sources/Occurrence/SwiftUI/LogView.swift b/Sources/Occurrence/SwiftUI/LogView.swift
index 98fd68a..695b9bb 100644
--- a/Sources/Occurrence/SwiftUI/LogView.swift
+++ b/Sources/Occurrence/SwiftUI/LogView.swift
@@ -84,6 +84,7 @@ public struct LogView: View {
             .toolbar {
                 ToolbarItemGroup(placement: .primaryAction) {
                     if allowManagement {
+                        #if !os(watchOS)
                         Menu {
                             Text("Subsystem")
 
@@ -131,6 +132,7 @@ public struct LogView: View {
                         } label: {
                             Label("Trash", systemImage: "trash")
                         }
+                        #endif
                     }
 
                     Toggle(isOn: $live) {