diff --git a/swift/Package.swift b/swift/Package.swift
index fea88e3e..8730f481 100644
--- a/swift/Package.swift
+++ b/swift/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.1
+// swift-tools-version:5.3
 
 import PackageDescription
 
diff --git a/swift/README.md b/swift/README.md
new file mode 100644
index 00000000..60168d5b
--- /dev/null
+++ b/swift/README.md
@@ -0,0 +1,12 @@
+## Build and test using any of the following
+
+Command line:
+- `swift test`
+
+Xcode:
+- Open this "swift" folder to open package
+- In the Xcode menu, select Product > Test to run tests
+
+AppCode:
+- Open this "swift" folder to open package
+- Select "GildedRoseTests" configuration and run
diff --git a/swift/Sources/GildedRose/GildedRose.swift b/swift/Sources/GildedRose/GildedRose.swift
index 9b975467..024d9870 100644
--- a/swift/Sources/GildedRose/GildedRose.swift
+++ b/swift/Sources/GildedRose/GildedRose.swift
@@ -1,12 +1,12 @@
 public class GildedRose {
-    var items:[Item]
+    var items: [Item]
     
-    public init(items:[Item]) {
+    public init(items: [Item]) {
         self.items = items
     }
     
     public func updateQuality() {
-        for i in 0..<items.count {
+        for i in 0 ..< items.count {
             if (items[i].name != "Aged Brie" && items[i].name != "Backstage passes to a TAFKAL80ETC concert") {
                 if (items[i].quality > 0) {
                     if (items[i].name != "Sulfuras, Hand of Ragnaros") {
diff --git a/swift/Tests/GildedRoseTests/GildedRoseTests.swift b/swift/Tests/GildedRoseTests/GildedRoseTests.swift
index 67a7c251..289352f2 100644
--- a/swift/Tests/GildedRoseTests/GildedRoseTests.swift
+++ b/swift/Tests/GildedRoseTests/GildedRoseTests.swift
@@ -3,16 +3,14 @@ import XCTest
 
 class GildedRoseTests: XCTestCase {
 
-    func testFoo() {
+    func testFoo() throws {
         let items = [Item(name: "foo", sellIn: 0, quality: 0)]
-        let app = GildedRose(items: items);
-        app.updateQuality();
-        XCTAssertEqual("fixme", app.items[0].name);
+        let app = GildedRose(items: items)
+        app.updateQuality()
+        XCTAssertEqual(app.items[0].name, "fixme")
     }
 
-    static var allTests : [(String, (GildedRoseTests) -> () throws -> Void)] {
-        return [
-            ("testFoo", testFoo),
-        ]
-    }
+    static var allTests = [
+        ("testFoo", testFoo),
+    ]
 }