diff --git a/Introspect/AppKitIntrospectionView.swift b/Introspect/AppKitIntrospectionView.swift
index ae375ff07..02e418ef6 100644
--- a/Introspect/AppKitIntrospectionView.swift
+++ b/Introspect/AppKitIntrospectionView.swift
@@ -3,6 +3,7 @@ import SwiftUI
 import AppKit
 
 /// Introspection NSView that is inserted alongside the target view.
+@available(macOS 15.0, *)
 public class IntrospectionNSView: NSView {
     
     required init() {
@@ -22,6 +23,7 @@ public class IntrospectionNSView: NSView {
 
 /// Introspection View that is injected into the UIKit hierarchy alongside the target view.
 /// After `updateNSView` is called, it calls `selector` to find the target view, then `customize` when the target view is found.
+@available(macOS 15.0, *)
 public struct AppKitIntrospectionView<TargetViewType: NSView>: NSViewRepresentable {
     
     /// Method that introspects the view hierarchy to find the target view.
diff --git a/Introspect/Introspect.swift b/Introspect/Introspect.swift
index 80da3781c..e72c32b23 100644
--- a/Introspect/Introspect.swift
+++ b/Introspect/Introspect.swift
@@ -190,7 +190,7 @@ public enum Introspect {
     }
 }
 
-enum TargetViewSelector {
+public enum TargetViewSelector {
     public static func sibling<TargetView: PlatformView>(from entry: PlatformView) -> TargetView? {
         guard let viewHost = Introspect.findViewHost(from: entry) else {
             return nil
diff --git a/Introspect/UIKitIntrospectionView.swift b/Introspect/UIKitIntrospectionView.swift
index e63386646..0a655271f 100644
--- a/Introspect/UIKitIntrospectionView.swift
+++ b/Introspect/UIKitIntrospectionView.swift
@@ -3,6 +3,7 @@ import UIKit
 import SwiftUI
 
 /// Introspection UIView that is inserted alongside the target view.
+@available(iOS 13.0, *)
 public class IntrospectionUIView: UIView {
     
     required init() {
@@ -19,6 +20,7 @@ public class IntrospectionUIView: UIView {
 
 /// Introspection View that is injected into the UIKit hierarchy alongside the target view.
 /// After `updateUIView` is called, it calls `selector` to find the target view, then `customize` when the target view is found.
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 public struct UIKitIntrospectionView<TargetViewType: UIView>: UIViewRepresentable {
     
     /// Method that introspects the view hierarchy to find the target view.
diff --git a/Introspect/UIKitIntrospectionViewController.swift b/Introspect/UIKitIntrospectionViewController.swift
index 59ed12b59..8eadf178b 100644
--- a/Introspect/UIKitIntrospectionViewController.swift
+++ b/Introspect/UIKitIntrospectionViewController.swift
@@ -3,6 +3,7 @@ import SwiftUI
 import UIKit
 
 /// Introspection UIViewController that is inserted alongside the target view controller.
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 public class IntrospectionUIViewController: UIViewController {
     required init() {
         super.init(nibName: nil, bundle: nil)
@@ -16,6 +17,7 @@ public class IntrospectionUIViewController: UIViewController {
 }
 
 /// This is the same logic as IntrospectionView but for view controllers. Please see details above.
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 public struct UIKitIntrospectionViewController<TargetViewControllerType: UIViewController>: UIViewControllerRepresentable {
     
     let selector: (IntrospectionUIViewController) -> TargetViewControllerType?
diff --git a/Introspect/ViewExtensions.swift b/Introspect/ViewExtensions.swift
index bbb07bd8a..374e6b7df 100644
--- a/Introspect/ViewExtensions.swift
+++ b/Introspect/ViewExtensions.swift
@@ -6,6 +6,7 @@ import AppKit
 import UIKit
 #endif
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 extension View {
     public func inject<SomeView>(_ view: SomeView) -> some View where SomeView: View {
         return overlay(view.frame(width: 0, height: 0))
@@ -13,6 +14,7 @@ extension View {
 }
 
 #if canImport(UIKit)
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 extension View {
     
     /// Finds a `TargetView` from a `SwiftUI.View`
@@ -115,6 +117,7 @@ extension View {
 #endif
 
 #if canImport(AppKit) && !targetEnvironment(macCatalyst)
+@available(macOS 15.0, *)
 extension View {
     
     /// Finds a `TargetView` from a `SwiftUI.View`
diff --git a/IntrospectTests/AppKitTests.swift b/IntrospectTests/AppKitTests.swift
index ba716b02b..f09175231 100644
--- a/IntrospectTests/AppKitTests.swift
+++ b/IntrospectTests/AppKitTests.swift
@@ -4,6 +4,7 @@ import XCTest
 import SwiftUI
 @testable import Introspect
 
+@available(macOS 15.0, *)
 enum TestUtils {
     static func present<ViewType: View>(view: ViewType) {
         
@@ -18,6 +19,7 @@ enum TestUtils {
     }
 }
 
+@available(macOS 15.0, *)
 private struct ListTestView: View {
     
     let spy1: () -> Void
@@ -37,6 +39,7 @@ private struct ListTestView: View {
     }
 }
 
+@available(macOS 15.0, *)
 private struct ScrollTestView: View {
     
     let spy1: () -> Void
@@ -60,6 +63,7 @@ private struct ScrollTestView: View {
     }
 }
 
+@available(macOS 15.0, *)
 private struct TextFieldTestView: View {
     let spy: () -> Void
     @State private var textFieldValue = ""
@@ -71,6 +75,7 @@ private struct TextFieldTestView: View {
     }
 }
 
+@available(macOS 15.0, *)
 private struct SliderTestView: View {
     let spy: () -> Void
     @State private var sliderValue = 0.0
@@ -82,6 +87,7 @@ private struct SliderTestView: View {
     }
 }
 
+@available(macOS 15.0, *)
 private struct StepperTestView: View {
     let spy: () -> Void
     var body: some View {
@@ -94,6 +100,7 @@ private struct StepperTestView: View {
     }
 }
 
+@available(macOS 15.0, *)
 private struct DatePickerTestView: View {
     let spy: () -> Void
     @State private var datePickerValue = Date()
@@ -107,6 +114,7 @@ private struct DatePickerTestView: View {
     }
 }
 
+@available(macOS 15.0, *)
 private struct SegmentedControlTestView: View {
     @State private var pickerValue = 0
     let spy: () -> Void
@@ -123,6 +131,7 @@ private struct SegmentedControlTestView: View {
     }
 }
 
+@available(macOS 15.0, *)
 class AppKitTests: XCTestCase {
     
     func testList() {
diff --git a/IntrospectTests/UIKitTests.swift b/IntrospectTests/UIKitTests.swift
index a9052f982..625db9897 100644
--- a/IntrospectTests/UIKitTests.swift
+++ b/IntrospectTests/UIKitTests.swift
@@ -4,6 +4,7 @@ import SwiftUI
 
 @testable import Introspect
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 enum TestUtils {
     static func present<ViewType: View>(view: ViewType) {
         
@@ -27,6 +28,7 @@ enum TestUtils {
     }
 }
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 private struct NavigationTestView: View {
     let spy: () -> Void
     var body: some View {
@@ -41,6 +43,7 @@ private struct NavigationTestView: View {
     }
 }
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 private struct ViewControllerTestView: View {
     let spy: () -> Void
     var body: some View {
@@ -55,6 +58,7 @@ private struct ViewControllerTestView: View {
     }
 }
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 private struct NavigationRootTestView: View {
     let spy: () -> Void
     var body: some View {
@@ -69,6 +73,7 @@ private struct NavigationRootTestView: View {
     }
 }
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 private struct TabTestView: View {
     @State private var selection = 0
     let spy: () -> Void
@@ -83,6 +88,7 @@ private struct TabTestView: View {
     }
 }
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 private struct TabRootTestView: View {
     @State private var selection = 0
     let spy: () -> Void
@@ -97,6 +103,7 @@ private struct TabRootTestView: View {
     }
 }
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 private struct ListTestView: View {
     
     let spy1: () -> Void
@@ -116,6 +123,7 @@ private struct ListTestView: View {
     }
 }
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 private struct ScrollTestView: View {
     
     let spy1: () -> Void
@@ -139,6 +147,7 @@ private struct ScrollTestView: View {
     }
 }
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 private struct TextFieldTestView: View {
     let spy: () -> Void
     @State private var textFieldValue = ""
@@ -150,6 +159,7 @@ private struct TextFieldTestView: View {
     }
 }
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 @available(tvOS, unavailable)
 private struct ToggleTestView: View {
     let spy: () -> Void
@@ -162,6 +172,7 @@ private struct ToggleTestView: View {
     }
 }
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 @available(tvOS, unavailable)
 private struct SliderTestView: View {
     let spy: () -> Void
@@ -174,6 +185,7 @@ private struct SliderTestView: View {
     }
 }
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 @available(tvOS, unavailable)
 private struct StepperTestView: View {
     let spy: () -> Void
@@ -187,6 +199,7 @@ private struct StepperTestView: View {
     }
 }
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 @available(tvOS, unavailable)
 private struct DatePickerTestView: View {
     let spy: () -> Void
@@ -201,6 +214,7 @@ private struct DatePickerTestView: View {
     }
 }
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 private struct SegmentedControlTestView: View {
     @State private var pickerValue = 0
     let spy: () -> Void
@@ -217,6 +231,7 @@ private struct SegmentedControlTestView: View {
     }
 }
 
+@available(iOS 13.0, tvOS 13.0, macOS 15.0, *)
 class UIKitTests: XCTestCase {
     func testNavigation() {
         
diff --git a/Package.swift b/Package.swift
index c9f72edae..574ee13df 100644
--- a/Package.swift
+++ b/Package.swift
@@ -5,7 +5,9 @@ import PackageDescription
 let package = Package(
     name: "Introspect",
     platforms: [
-        .macOS(.v10_15), .iOS(.v13), .tvOS(.v13)
+        .macOS(.v10_13),
+        .iOS(.v11),
+        .tvOS(.v11)
     ],
     products: [
         .library(