diff --git a/.gitignore b/.gitignore
index 8f68502..dad3ec3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,3 +30,6 @@ xcuserdata
 
 # Carthage
 Carthage/Build
+
+# SwiftPM
+.build
diff --git a/Package.swift b/Package.swift
new file mode 100644
index 0000000..a9a6cdb
--- /dev/null
+++ b/Package.swift
@@ -0,0 +1,18 @@
+// swift-tools-version:5.2
+
+import PackageDescription
+
+let package = Package(
+    name: "Permission",
+    platforms: [
+      .iOS(.v10)
+    ],
+    products: [
+      .library(name: "Permission", targets: ["Permission"])
+    ],
+    targets: [
+      .target(name: "Permission", path: "Source"),
+      .testTarget(name: "PermissionTests", dependencies: ["Permission"], path: "Tests")
+    ]
+)
+
diff --git a/Source/Permission.swift b/Source/Permission.swift
index 6cf36c0..2800c1d 100644
--- a/Source/Permission.swift
+++ b/Source/Permission.swift
@@ -22,6 +22,8 @@
 // SOFTWARE.
 //
 
+import Foundation
+
 open class Permission: NSObject {
     public typealias Callback = (PermissionStatus) -> Void
 
diff --git a/Source/PermissionAlert.swift b/Source/PermissionAlert.swift
index 6a9904c..d860166 100644
--- a/Source/PermissionAlert.swift
+++ b/Source/PermissionAlert.swift
@@ -22,6 +22,10 @@
 // SOFTWARE.
 //
 
+#if canImport(UIKit)
+import UIKit
+#endif
+
 open class PermissionAlert {
     /// The permission.
     fileprivate let permission: Permission
diff --git a/Source/PermissionButton.swift b/Source/PermissionButton.swift
index e6eea9a..fc09101 100644
--- a/Source/PermissionButton.swift
+++ b/Source/PermissionButton.swift
@@ -22,6 +22,10 @@
 // SOFTWARE.
 //
 
+#if canImport(UIKit)
+import UIKit
+#endif
+
 open class PermissionButton: UIButton {
 
     /// The permission of the button.
diff --git a/Source/Supporting Files/Utilities.swift b/Source/Supporting Files/Utilities.swift
index 6dc00e5..86484db 100644
--- a/Source/Supporting Files/Utilities.swift	
+++ b/Source/Supporting Files/Utilities.swift	
@@ -22,6 +22,10 @@
 // SOFTWARE.
 //
 
+#if canImport(UIKit)
+import UIKit
+#endif
+
 extension UIApplication {
     private var topViewController: UIViewController? {
         var vc = keyWindow?.rootViewController