diff --git a/Package.swift b/Package.swift
new file mode 100644
index 0000000..7eecad0
--- /dev/null
+++ b/Package.swift
@@ -0,0 +1,22 @@
+// swift-tools-version:5.1
+
+import PackageDescription
+
+let package = Package(
+    name: "SwiftyAttributes",
+    platforms: [
+        .iOS(.v8),
+        .macOS(.v10_11),
+        .tvOS(.v9)
+    ],
+    products: [
+        .library(name: "SwiftyAttributes", targets: ["SwiftyAttributes"])
+    ],
+    targets: [
+        .target(name: "SwiftyAttributes", path: "SwiftyAttributes"),
+        .testTarget(name: "SwiftyAttributesTests", dependencies: ["SwiftyAttributes"], path: "SwiftyAttributesTests")
+    ],
+    swiftLanguageVersions: [
+        .v5
+    ]
+)
diff --git a/SwiftyAttributes/Sources/common/Attribute+Sequence.swift b/SwiftyAttributes/Sources/common/Attribute+Sequence.swift
index 1c9830e..b0bf2a5 100644
--- a/SwiftyAttributes/Sources/common/Attribute+Sequence.swift
+++ b/SwiftyAttributes/Sources/common/Attribute+Sequence.swift
@@ -6,6 +6,8 @@
 //  Copyright © 2016 Eddie Kaiger. All rights reserved.
 //
 
+import Foundation
+
 /**
  An extension on dictionaries that allows us to convert a Foundation-based dictionary of attributes to an array of `Attribute`s.
  */