diff --git a/.travis.yml b/.travis.yml
index a247a79..ce42220 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 language: objective-c
-osx_image: xcode10
+osx_image: xcode10.2
 env:
   global:
     - LC_CTYPE=en_US.UTF-8
@@ -7,10 +7,10 @@ env:
     - PROJECT=FileKit.xcodeproj
     - IOS_FRAMEWORK_SCHEME="FileKit-iOS"
     - MACOS_FRAMEWORK_SCHEME="FileKit-OSX"
-    - IOS_SDK=iphonesimulator12.0
-    - MACOS_SDK=macosx10.13
+    - IOS_SDK=iphonesimulator12.2
+    - MACOS_SDK=macosx10.14
   matrix:
-    - DESTINATION="OS=12.0,name=iPhone 8" SCHEME="$IOS_FRAMEWORK_SCHEME" SDK="$IOS_SDK" RUN_TESTS="NO"
+    - DESTINATION="OS=12.2,name=iPhone 8" SCHEME="$IOS_FRAMEWORK_SCHEME" SDK="$IOS_SDK" RUN_TESTS="NO"
     - DESTINATION="arch=x86_64" SCHEME="$MACOS_FRAMEWORK_SCHEME" SDK="$MACOS_SDK" RUN_TESTS="YES"
 before_install:
   - gem install xcpretty --no-rdoc --no-ri --no-document --quiet
diff --git a/FileKit.podspec b/FileKit.podspec
index a4412fc..6eff8c2 100644
--- a/FileKit.podspec
+++ b/FileKit.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
     s.name                      = "FileKit"
-    s.version                   = "5.2.0"
+    s.version                   = "5.3.0"
     s.summary                   = "Simple and expressive file management in Swift."
     s.homepage                  = "https://github.com/nvzqz/FileKit"
     s.license                   = { :type => "MIT", :file => "LICENSE.md" }
diff --git a/Package.swift b/Package.swift
index c11c1b7..845b0bf 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,3 +1,4 @@
+// swift-tools-version:4.2
 //
 //  Package.swift
 //  FileKit
@@ -29,7 +30,23 @@ import PackageDescription
 
 let package = Package(
     name: "FileKit",
-    exclude: [
-	"Tests"
+    products: [
+        // Products define the executables and libraries produced by a package, and make them visible to other packages.
+        .library(
+            name: "FileKit",
+            targets: ["FileKit"]),
+    ],
+    dependencies: [],
+    targets: [
+        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
+        // Targets can depend on other targets in this package, and on products in packages which this package depends on.
+        .target(
+            name: "FileKit",
+            dependencies: [],
+            path: "Sources"),
+        .testTarget(
+            name: "FileKitTests",
+            dependencies: ["FileKit"],
+            path: "Tests")
     ]
 )
diff --git a/Sources/DataType.swift b/Sources/DataType.swift
index ea06023..a1a4758 100644
--- a/Sources/DataType.swift
+++ b/Sources/DataType.swift
@@ -47,7 +47,7 @@ extension Readable {
     ///
     /// - Parameter path: The path being read from.
     ///
-    public init(contentsOfPath path: Path) throws { // swiftlint:disable:this valid_docs
+    public init(contentsOfPath path: Path) throws {
         self = try Self.read(from: path)
     }
 
@@ -77,7 +77,7 @@ extension Writable {
     ///
     /// - Parameter path: The path being written to.
     ///
-    public func write(to path: Path) throws { // swiftlint:disable:this valid_docs
+    public func write(to path: Path) throws {
         try write(to: path, atomically: true)
     }
 
diff --git a/Tests/FileKitTests.swift b/Tests/FileKitTests.swift
index 49d2dab..bd3ac14 100644
--- a/Tests/FileKitTests.swift
+++ b/Tests/FileKitTests.swift
@@ -199,7 +199,11 @@ class FileKitTests: XCTestCase {
 
         let directories = children.filter { $0.isDirectory }
 
-        guard let directory  = directories.first, let childOfChild = directory.children().first else {
+        if let directory = directories.first, directory.children().isEmpty {
+            try? (directory + "childOfChild").createDirectory()
+        }
+
+        guard let directory = directories.first, let childOfChild = directory.children().first else {
             XCTFail("No child of child into \(p)")
             return
         }