diff --git a/Demo/Demo.xcodeproj/project.pbxproj b/Demo/Demo.xcodeproj/project.pbxproj
index 73d8dc9..20b135f 100644
--- a/Demo/Demo.xcodeproj/project.pbxproj
+++ b/Demo/Demo.xcodeproj/project.pbxproj
@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 77;
+	objectVersion = 70;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -15,11 +15,7 @@
 /* End PBXFileReference section */
 
 /* Begin PBXFileSystemSynchronizedRootGroup section */
-		E2253BB32C9FD258003D69BB /* Demo */ = {
-			isa = PBXFileSystemSynchronizedRootGroup;
-			path = Demo;
-			sourceTree = "<group>";
-		};
+		E2253BB32C9FD258003D69BB /* Demo */ = {isa = PBXFileSystemSynchronizedRootGroup; explicitFileTypes = {}; explicitFolders = (); path = Demo; sourceTree = "<group>"; };
 /* End PBXFileSystemSynchronizedRootGroup section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -84,7 +80,7 @@
 			attributes = {
 				BuildIndependentTargetsInParallel = 1;
 				LastSwiftUpdateCheck = 1600;
-				LastUpgradeCheck = 1600;
+				LastUpgradeCheck = 1610;
 				TargetAttributes = {
 					E2253BB02C9FD258003D69BB = {
 						CreatedOnToolsVersion = 16.0;
@@ -92,6 +88,7 @@
 				};
 			};
 			buildConfigurationList = E2253BAC2C9FD258003D69BB /* Build configuration list for PBXProject "Demo" */;
+			compatibilityVersion = "Xcode 15.0";
 			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
@@ -103,7 +100,6 @@
 			packageReferences = (
 				E2253BE72C9FD361003D69BB /* XCLocalSwiftPackageReference "../../MacControlCenterUI" */,
 			);
-			preferredProjectObjectVersion = 77;
 			productRefGroup = E2253BB22C9FD258003D69BB /* Products */;
 			projectDirPath = "";
 			projectRoot = "";
@@ -168,6 +164,7 @@
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = NO;
+				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
@@ -194,6 +191,7 @@
 				SDKROOT = macosx;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = "DEBUG $(inherited)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 6.0;
 			};
 			name = Debug;
 		};
@@ -231,6 +229,7 @@
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = NO;
+				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
@@ -249,6 +248,7 @@
 				MTL_FAST_MATH = YES;
 				SDKROOT = macosx;
 				SWIFT_COMPILATION_MODE = wholemodule;
+				SWIFT_VERSION = 6.0;
 			};
 			name = Release;
 		};
@@ -261,6 +261,7 @@
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
 				CURRENT_PROJECT_VERSION = 1;
+				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = XWV9RUCWEG;
 				ENABLE_HARDENED_RUNTIME = YES;
 				ENABLE_PREVIEWS = YES;
@@ -276,7 +277,6 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "com.orchetect.MacControlCenterUI.Demo${DEVELOPMENT_TEAM}";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_EMIT_LOC_STRINGS = YES;
-				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -289,6 +289,7 @@
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
 				CURRENT_PROJECT_VERSION = 1;
+				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = XWV9RUCWEG;
 				ENABLE_HARDENED_RUNTIME = YES;
 				ENABLE_PREVIEWS = YES;
@@ -304,7 +305,6 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "com.orchetect.MacControlCenterUI.Demo${DEVELOPMENT_TEAM}";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_EMIT_LOC_STRINGS = YES;
-				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
diff --git a/Demo/Demo/DemoApp.swift b/Demo/Demo/DemoApp.swift
index 9b8bdb6..beb7c5d 100644
--- a/Demo/Demo/DemoApp.swift
+++ b/Demo/Demo/DemoApp.swift
@@ -33,12 +33,12 @@ struct DemoApp: App {
 
 // MARK: App Lifecycle & Global
 
-func activateApp() {
+@MainActor func activateApp() {
     NSApp.activate(ignoringOtherApps: true)
 }
 
 /// This still works on macOS 14 thankfully.
-func showStandardAboutWindow() {
+@MainActor func showStandardAboutWindow() {
     NSApp.sendAction(
         #selector(NSApplication.orderFrontStandardAboutPanel(_:)),
         to: nil,
@@ -46,6 +46,6 @@ func showStandardAboutWindow() {
     )
 }
 
-func quit() {
+@MainActor func quit() {
     NSApp.terminate(nil)
 }