diff --git a/LICENSE b/LICENSE
index 32b1dac..2b9e9eb 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 BSD 3-Clause License
 
-Copyright (c) 2017, Digipolitan
+Copyright (c) 2019, Digipolitan
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/Package.resolved b/Package.resolved
new file mode 100644
index 0000000..5cefbe8
--- /dev/null
+++ b/Package.resolved
@@ -0,0 +1,8 @@
+{
+  "object": {
+    "pins": [
+
+    ]
+  },
+  "version": 1
+}
diff --git a/Package.swift b/Package.swift
index ea322de..167779e 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:4.0
+// swift-tools-version:4.2
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
diff --git a/README.md b/README.md
index 9558187..4a543b9 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 StringCase
 =================================
 
+[![Swift Version](https://img.shields.io/badge/swift-4.2-orange.svg?style=flat)](https://developer.apple.com/swift/)
 [![Swift Package Manager](https://rawgit.com/jlyonsmith/artwork/master/SwiftPackageManager/swiftpackagemanager-compatible.svg)](https://swift.org/package-manager/)
 [![Twitter](https://img.shields.io/badge/twitter-@Digipolitan-blue.svg?style=flat)](http://twitter.com/Digipolitan)
 
diff --git a/Sources/StringCase/StringCase.swift b/Sources/StringCase/StringCase.swift
index bb903f6..205586c 100644
--- a/Sources/StringCase/StringCase.swift
+++ b/Sources/StringCase/StringCase.swift
@@ -85,8 +85,8 @@ public extension String {
 
     public func camelCased(_ format: StringCaseFormat.CamelCase = .default) -> String {
         var res: [String] = []
-        for (i, str) in self.caseSplit().enumerated() {
-            if i == 0 && format == .default {
+        for (idx, str) in self.caseSplit().enumerated() {
+            if idx == 0 && format == .default {
                 res.append(str.lowercased())
                 continue
             }
diff --git a/Tests/LinuxMain.swift b/Tests/LinuxMain.swift
index 530dd54..d599420 100644
--- a/Tests/LinuxMain.swift
+++ b/Tests/LinuxMain.swift
@@ -1,6 +1,7 @@
 import XCTest
-@testable import StringCaseTests
 
-XCTMain([
-    testCase(StringCaseTests.allTests)
-])
+import StringCaseTests
+
+var tests = [XCTestCaseEntry]()
+tests += StringCaseTests.allTests()
+XCTMain(tests)
diff --git a/Tests/StringCaseTests/StringCamelCaseTests.swift b/Tests/StringCaseTests/StringCamelCaseTests.swift
index 31c2598..c66ce6e 100644
--- a/Tests/StringCaseTests/StringCamelCaseTests.swift
+++ b/Tests/StringCaseTests/StringCamelCaseTests.swift
@@ -1,7 +1,7 @@
 import XCTest
 @testable import StringCase
 
-class StringCamelCaseTests: XCTestCase {
+final class StringCamelCaseTests: XCTestCase {
     func testCamelCase() {
         XCTAssertEqual("i love swift".camelCased(), "iLoveSwift")
     }
diff --git a/Tests/StringCaseTests/StringSnakeCaseTests.swift b/Tests/StringCaseTests/StringSnakeCaseTests.swift
index 7ab647c..6e6203c 100644
--- a/Tests/StringCaseTests/StringSnakeCaseTests.swift
+++ b/Tests/StringCaseTests/StringSnakeCaseTests.swift
@@ -1,7 +1,7 @@
 import XCTest
 @testable import StringCase
 
-class StringSnakeCaseTests: XCTestCase {
+final class StringSnakeCaseTests: XCTestCase {
     func testSnakeCase() {
         XCTAssertEqual("i love swift".snakeCased(), "i_love_swift")
     }
diff --git a/Tests/StringCaseTests/XCTestManifests.swift b/Tests/StringCaseTests/XCTestManifests.swift
new file mode 100644
index 0000000..655e9ea
--- /dev/null
+++ b/Tests/StringCaseTests/XCTestManifests.swift
@@ -0,0 +1,10 @@
+import XCTest
+
+#if !os(macOS)
+public func allTests() -> [XCTestCaseEntry] {
+    return [
+        testCase(StringCamelCaseTests.allTests),
+        testCase(StringSnakeCaseTests.allTests)
+    ]
+}
+#endif