diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a039cb1..f18c110 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,10 +7,10 @@ on:
 
 jobs:
   mac:
-    runs-on: macos-11
+    runs-on: macos-14
     strategy:
       matrix:
-        xcode: [11.7, 12.5.1, 13.1]
+        xcode: [14.3.1, 15.2]
       fail-fast: false
     name: Xcode ${{ matrix.xcode }}
     env:
@@ -21,9 +21,9 @@ jobs:
         run: |
           set -o pipefail
           xcodebuild build-for-testing test-without-building -scheme Kanna -configuration Release ENABLE_TESTABILITY=YES | xcpretty -c
-          xcodebuild build-for-testing test-without-building -scheme Kanna -configuration Release -sdk iphonesimulator -destination "name=iPhone 8" ENABLE_TESTABILITY=YES | xcpretty -c
+          xcodebuild build-for-testing test-without-building -scheme Kanna -configuration Release -sdk iphonesimulator -destination "name=iPhone 15" ENABLE_TESTABILITY=YES | xcpretty -c
           xcodebuild build-for-testing test-without-building -scheme Kanna -configuration Release -sdk appletvsimulator -destination "name=Apple TV" ENABLE_TESTABILITY=YES | xcpretty -c
-          xcodebuild -scheme Kanna -configuration Release -sdk watchsimulator -destination "name=Apple Watch Series 4 - 40mm"
+          xcodebuild -scheme Kanna -configuration Release -sdk watchsimulator -destination "name=Apple Watch Series 8 (45mm)"
       - name: swiftpm build and test
         run: |
           swift build
diff --git a/.swift-version b/.swift-version
index ef425ca..95ee81a 100644
--- a/.swift-version
+++ b/.swift-version
@@ -1 +1 @@
-5.2
+5.9
diff --git a/Kanna.podspec b/Kanna.podspec
index 14b831f..a088320 100644
--- a/Kanna.podspec
+++ b/Kanna.podspec
@@ -7,7 +7,7 @@ Pod::Spec.new do |s|
   s.author           = { "Atsushi Kiwaki" => "tid.develop@gmail.com" }
   s.source           = { :git => "https://github.com/tid-kijyun/Kanna.git", :tag => s.version.to_s }
   s.social_media_url = 'https://twitter.com/_tid_'
-  s.swift_versions   = ["5.0", "5.1", "5.2"]
+  s.swift_versions   = '5'
 
   s.ios.deployment_target = '8.0'
   s.osx.deployment_target = '10.9'
@@ -15,6 +15,7 @@ Pod::Spec.new do |s|
   s.watchos.deployment_target = "2.0"
   s.requires_arc = true
   s.source_files  = ['Sources/**/*.swift', 'Sources/**/*.h']
+  s.resource_bundles = {'kanna_privacy' => ['Kanna/PrivacyInfo.xcprivacy']}
   s.xcconfig      = {
                       'HEADER_SEARCH_PATHS' => '$(SDKROOT)/usr/include/libxml2',
                       'OTHER_LDFLAGS' => '-lxml2'
diff --git a/Kanna.xcodeproj/project.pbxproj b/Kanna.xcodeproj/project.pbxproj
index a7db722..ba9fc78 100644
--- a/Kanna.xcodeproj/project.pbxproj
+++ b/Kanna.xcodeproj/project.pbxproj
@@ -3,10 +3,12 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 46;
+	objectVersion = 54;
 	objects = {
 
 /* Begin PBXBuildFile section */
+		1E76C39D2B86F5EA009A89B9 /* Bundle+.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1E76C39C2B86F5EA009A89B9 /* Bundle+.swift */; };
+		1E76C39F2B86F907009A89B9 /* PrivacyInfo.xcprivacy in Resources */ = {isa = PBXBuildFile; fileRef = 1E76C39E2B86F907009A89B9 /* PrivacyInfo.xcprivacy */; };
 		1E7ADC3D1DF4F3FC006E1815 /* Kanna.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 1E7ADC331DF4F3FC006E1815 /* Kanna.framework */; };
 		1E7ADC561DF4F567006E1815 /* CSS.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1E7ADC4F1DF4F567006E1815 /* CSS.swift */; };
 		1E7ADC581DF4F567006E1815 /* Kanna.h in Headers */ = {isa = PBXBuildFile; fileRef = 1E7ADC511DF4F567006E1815 /* Kanna.h */; settings = {ATTRIBUTES = (Public, ); }; };
@@ -41,6 +43,8 @@
 /* End PBXContainerItemProxy section */
 
 /* Begin PBXFileReference section */
+		1E76C39C2B86F5EA009A89B9 /* Bundle+.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Bundle+.swift"; sourceTree = "<group>"; };
+		1E76C39E2B86F907009A89B9 /* PrivacyInfo.xcprivacy */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xml; path = PrivacyInfo.xcprivacy; sourceTree = "<group>"; };
 		1E7ADC331DF4F3FC006E1815 /* Kanna.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Kanna.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		1E7ADC3C1DF4F3FC006E1815 /* Tests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = Tests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
 		1E7ADC4F1DF4F567006E1815 /* CSS.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = CSS.swift; sourceTree = "<group>"; };
@@ -129,6 +133,7 @@
 				1E7ADC551DF4F567006E1815 /* libxmlParserOption.swift */,
 				1EC805F91FA2FB2F0067D3DA /* Deprecated.swift */,
 				1E7ADC501DF4F567006E1815 /* Info.plist */,
+				1E76C39E2B86F907009A89B9 /* PrivacyInfo.xcprivacy */,
 			);
 			path = Kanna;
 			sourceTree = "<group>";
@@ -152,6 +157,7 @@
 				1E7ADC8C1DF55B37006E1815 /* KannaTutorialsTest.swift */,
 				1E7ADC9A1DF5907F006E1815 /* Data */,
 				1E7ADC8A1DF55B37006E1815 /* Info.plist */,
+				1E76C39C2B86F5EA009A89B9 /* Bundle+.swift */,
 			);
 			path = KannaTests;
 			sourceTree = "<group>";
@@ -240,8 +246,9 @@
 		1E7ADC2A1DF4F3FC006E1815 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
+				BuildIndependentTargetsInParallel = YES;
 				LastSwiftUpdateCheck = 0810;
-				LastUpgradeCheck = 1020;
+				LastUpgradeCheck = 1520;
 				ORGANIZATIONNAME = "Atsushi Kiwaki";
 				TargetAttributes = {
 					1E7ADC321DF4F3FC006E1815 = {
@@ -281,6 +288,7 @@
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				1E76C39F2B86F907009A89B9 /* PrivacyInfo.xcprivacy in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -340,6 +348,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				1E7ADC931DF55B37006E1815 /* KannaHTMLTests.swift in Sources */,
+				1E76C39D2B86F5EA009A89B9 /* Bundle+.swift in Sources */,
 				1E7ADC941DF55B37006E1815 /* KannaTutorialsTest.swift in Sources */,
 				1EB4A01F204C1F240003D7A2 /* KannaCSSTests.swift in Sources */,
 				1E7E698A204C1D6300516E31 /* KannaXMLModifyingTests.swift in Sources */,
@@ -385,6 +394,7 @@
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
@@ -394,9 +404,11 @@
 				CODE_SIGN_IDENTITY = "-";
 				COPY_PHASE_STRIP = NO;
 				CURRENT_PROJECT_VERSION = 1;
+				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_NO_COMMON_BLOCKS = YES;
@@ -453,6 +465,7 @@
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
@@ -462,9 +475,11 @@
 				CODE_SIGN_IDENTITY = "-";
 				COPY_PHASE_STRIP = NO;
 				CURRENT_PROJECT_VERSION = 1;
+				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
@@ -477,8 +492,9 @@
 				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
+				SWIFT_COMPILATION_MODE = wholemodule;
 				SWIFT_INCLUDE_PATHS = "";
-				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+				SWIFT_OPTIMIZATION_LEVEL = "-O";
 				SWIFT_VERSION = 5.0;
 				TVOS_DEPLOYMENT_TARGET = 12.0;
 				VERSIONING_SYSTEM = "apple-generic";
@@ -493,17 +509,25 @@
 			buildSettings = {
 				CODE_SIGN_IDENTITY = "";
 				COMBINE_HIDPI_IMAGES = YES;
+				DEAD_CODE_STRIPPING = YES;
 				DEFINES_MODULE = YES;
 				DEVELOPMENT_TEAM = "";
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
+				ENABLE_MODULE_VERIFIER = YES;
 				FRAMEWORK_VERSION = A;
 				INFOPLIST_FILE = Sources/Kanna/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
 				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/Frameworks";
-				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/../Frameworks",
+					"@loader_path/Frameworks",
+				);
+				MACOSX_DEPLOYMENT_TARGET = "$(RECOMMENDED_MACOSX_DEPLOYMENT_TARGET)";
+				MODULE_VERIFIER_SUPPORTED_LANGUAGES = "objective-c objective-c++";
+				MODULE_VERIFIER_SUPPORTED_LANGUAGE_STANDARDS = "gnu99 gnu++11";
 				OTHER_LDFLAGS = "-lxml2";
 				PRODUCT_BUNDLE_IDENTIFIER = com.tid.Kanna;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -520,17 +544,25 @@
 			buildSettings = {
 				CODE_SIGN_IDENTITY = "";
 				COMBINE_HIDPI_IMAGES = YES;
+				DEAD_CODE_STRIPPING = YES;
 				DEFINES_MODULE = YES;
 				DEVELOPMENT_TEAM = "";
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
+				ENABLE_MODULE_VERIFIER = YES;
 				FRAMEWORK_VERSION = A;
 				INFOPLIST_FILE = Sources/Kanna/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
 				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/Frameworks";
-				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/../Frameworks",
+					"@loader_path/Frameworks",
+				);
+				MACOSX_DEPLOYMENT_TARGET = "$(RECOMMENDED_MACOSX_DEPLOYMENT_TARGET)";
+				MODULE_VERIFIER_SUPPORTED_LANGUAGES = "objective-c objective-c++";
+				MODULE_VERIFIER_SUPPORTED_LANGUAGE_STANDARDS = "gnu99 gnu++11";
 				OTHER_LDFLAGS = "-lxml2";
 				PRODUCT_BUNDLE_IDENTIFIER = com.tid.Kanna;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -548,9 +580,14 @@
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				CLANG_ENABLE_MODULES = YES;
 				COMBINE_HIDPI_IMAGES = YES;
+				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = DP9Q5R8635;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/../Frameworks";
-				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/../Frameworks",
+					"@loader_path/../Frameworks",
+				);
+				MACOSX_DEPLOYMENT_TARGET = "$(RECOMMENDED_MACOSX_DEPLOYMENT_TARGET)";
 				PRODUCT_BUNDLE_IDENTIFIER = com.tid.KannaTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
@@ -566,9 +603,14 @@
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				CLANG_ENABLE_MODULES = YES;
 				COMBINE_HIDPI_IMAGES = YES;
+				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = DP9Q5R8635;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/../Frameworks";
-				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/../Frameworks",
+					"@loader_path/../Frameworks",
+				);
+				MACOSX_DEPLOYMENT_TARGET = "$(RECOMMENDED_MACOSX_DEPLOYMENT_TARGET)";
 				PRODUCT_BUNDLE_IDENTIFIER = com.tid.KannaTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;
diff --git a/Kanna.xcodeproj/xcshareddata/xcschemes/Kanna.xcscheme b/Kanna.xcodeproj/xcshareddata/xcschemes/Kanna.xcscheme
index 56463f1..3515669 100644
--- a/Kanna.xcodeproj/xcshareddata/xcschemes/Kanna.xcscheme
+++ b/Kanna.xcodeproj/xcshareddata/xcschemes/Kanna.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1020"
+   LastUpgradeVersion = "1520"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -27,6 +27,15 @@
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "1E7ADC321DF4F3FC006E1815"
+            BuildableName = "Kanna.framework"
+            BlueprintName = "Kanna"
+            ReferencedContainer = "container:Kanna.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <Testables>
          <TestableReference
             skipped = "NO">
@@ -39,17 +48,6 @@
             </BuildableReference>
          </TestableReference>
       </Testables>
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "1E7ADC321DF4F3FC006E1815"
-            BuildableName = "Kanna.framework"
-            BlueprintName = "Kanna"
-            ReferencedContainer = "container:Kanna.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -70,8 +68,6 @@
             ReferencedContainer = "container:Kanna.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"
diff --git a/Package.swift b/Package.swift
index e342edb..c9a6ad8 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.0
+// swift-tools-version:5.5
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 import PackageDescription
 
@@ -46,12 +46,20 @@ let package = Package(
                 "Kanna/Info.plist",
                 "Kanna/Kanna.h",
                 "../Tests/KannaTests/Data"
+            ],
+            resources: [
+                .copy("Kanna/PrivacyInfo.xcprivacy"),
             ]
         ),
         .testTarget(
             name: "KannaTests",
-            dependencies: ["Kanna"]
+            dependencies: ["Kanna"],
+            exclude: [
+                "Info.plist",
+            ],
+            resources: [
+                .process("Data"),
+            ]
         )
-    ],
-    swiftLanguageVersions: [.v5]
+    ]
 )
diff --git a/Sources/Kanna/PrivacyInfo.xcprivacy b/Sources/Kanna/PrivacyInfo.xcprivacy
new file mode 100644
index 0000000..d37d627
--- /dev/null
+++ b/Sources/Kanna/PrivacyInfo.xcprivacy
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>NSPrivacyCollectedDataTypes</key>
+	<array/>
+	<key>NSPrivacyAccessedAPITypes</key>
+	<array/>
+	<key>NSPrivacyTrackingDomains</key>
+	<array/>
+	<key>NSPrivacyTracking</key>
+	<false/>
+</dict>
+</plist>
diff --git a/Tests/KannaTests/Bundle+.swift b/Tests/KannaTests/Bundle+.swift
new file mode 100644
index 0000000..51fca36
--- /dev/null
+++ b/Tests/KannaTests/Bundle+.swift
@@ -0,0 +1,19 @@
+//
+//  Bundle+.swift
+//  Tests
+//
+//  Created by Atsushi Kiwaki on 2024/02/22.
+//  Copyright © 2024 Atsushi Kiwaki. All rights reserved.
+//
+
+import Foundation
+
+extension Bundle {
+    static func testBundle(for aClass: AnyClass) -> Bundle {
+#if SWIFT_PACKAGE
+        module
+#else
+        Bundle(for: aClass)
+#endif
+    }
+}
diff --git a/Tests/KannaTests/KannaHTMLTests.swift b/Tests/KannaTests/KannaHTMLTests.swift
index efe5289..7905fc6 100755
--- a/Tests/KannaTests/KannaHTMLTests.swift
+++ b/Tests/KannaTests/KannaHTMLTests.swift
@@ -34,7 +34,8 @@ class KannaHTMLTests: XCTestCase {
     func testHTML4() {
         // This is an example of a functional test case.
         let filename = "test_HTML4"
-        guard let path = Bundle(for: KannaHTMLTests.self).path(forResource: filename, ofType: "html") else {
+        guard let path = Bundle.testBundle(for: KannaHTMLTests.self).path(forResource: filename, ofType: "html") else {
+            XCTFail()
             return
         }
 
@@ -103,7 +104,8 @@ class KannaHTMLTests: XCTestCase {
 
     func testInnerHTML() {
         let filename = "test_HTML4"
-        guard let path = Bundle(for: KannaHTMLTests.self).path(forResource: filename, ofType: "html") else {
+        guard let path = Bundle.testBundle(for: KannaHTMLTests.self).path(forResource: filename, ofType: "html") else {
+            XCTFail()
             return
         }
 
@@ -176,7 +178,8 @@ class KannaHTMLTests: XCTestCase {
 
     func testOutOfDocument() {
         let filename = "test_HTML4"
-        guard let path = Bundle(for: KannaHTMLTests.self).path(forResource: filename, ofType: "html") else {
+        guard let path = Bundle.testBundle(for: KannaHTMLTests.self).path(forResource: filename, ofType: "html") else {
+            XCTFail()
             return
         }
 
diff --git a/Tests/KannaTests/KannaTutorialsTest.swift b/Tests/KannaTests/KannaTutorialsTest.swift
index db5f119..da79052 100644
--- a/Tests/KannaTests/KannaTutorialsTest.swift
+++ b/Tests/KannaTests/KannaTutorialsTest.swift
@@ -25,7 +25,8 @@ class KannaTutorialsTests: XCTestCase {
 
     func testParsingFromFile() {
         let filename = "test_HTML4"
-        guard let filePath = Bundle(for: KannaTutorialsTests.self).path(forResource: filename, ofType: "html") else {
+        guard let filePath = Bundle.testBundle(for: KannaTutorialsTests.self).path(forResource: filename, ofType: "html") else {
+            XCTFail()
             return
         }
         if let data = try? Data(contentsOf: URL(fileURLWithPath: filePath)),
@@ -76,7 +77,8 @@ class KannaTutorialsTests: XCTestCase {
             "iOS 8"
         ]
         let filename = "versions"
-        guard let filePath = Bundle(for: KannaTutorialsTests.self).path(forResource: filename, ofType: "xml") else {
+        guard let filePath = Bundle.testBundle(for: KannaTutorialsTests.self).path(forResource: filename, ofType: "xml") else {
+            XCTFail()
             return
         }
         if let xml = try? String(contentsOfFile: filePath, encoding: .utf8),
@@ -112,8 +114,9 @@ class KannaTutorialsTests: XCTestCase {
         ]
 
         let filename = "libraries"
-        guard let filePath = Bundle(for: KannaTutorialsTests.self).path(forResource: filename, ofType: "xml"),
+        guard let filePath = Bundle.testBundle(for: KannaTutorialsTests.self).path(forResource: filename, ofType: "xml"),
             let xml = try? String(contentsOfFile: filePath, encoding: .utf8) else {
+            XCTFail()
             return
         }
 
@@ -133,8 +136,9 @@ class KannaTutorialsTests: XCTestCase {
     func testModifyingChangingTextContents() {
         let TestModifyHTML = "<body>\n    <h1>Snap, Crackle &amp; Pop</h1>\n    <div>A love triangle.</div>\n</body>"
         let filename = "sample"
-        guard let filePath = Bundle(for: KannaTutorialsTests.self).path(forResource: filename, ofType: "html"),
+        guard let filePath = Bundle.testBundle(for: KannaTutorialsTests.self).path(forResource: filename, ofType: "html"),
             let html = try? String(contentsOfFile: filePath, encoding: .utf8) else {
+            XCTFail()
             return
         }
 
@@ -152,8 +156,9 @@ class KannaTutorialsTests: XCTestCase {
         let TestModifyHTML = "<body>\n    \n    <div>A love triangle.<h1>Three\'s Company</h1>\n</div>\n</body>"
         let TestModifyArrangeHTML = "<body>\n    \n    <div>A love triangle.</div>\n<h1>Three\'s Company</h1>\n</body>"
         let filename = "sample"
-        guard let filePath = Bundle(for: KannaTutorialsTests.self).path(forResource: filename, ofType: "html"),
+        guard let filePath = Bundle.testBundle(for: KannaTutorialsTests.self).path(forResource: filename, ofType: "html"),
             let html = try? String(contentsOfFile: filePath, encoding: .utf8) else {
+            XCTFail()
             return
         }
 
@@ -175,8 +180,9 @@ class KannaTutorialsTests: XCTestCase {
     func testModifyingNodesAndAttributes() {
         let TestModifyHTML = "<body>\n    <h2 class=\"show-title\">Three\'s Company</h2>\n    <div>A love triangle.</div>\n</body>"
         let filename = "sample"
-        guard let filePath = Bundle(for: KannaTutorialsTests.self).path(forResource: filename, ofType: "html"),
+        guard let filePath = Bundle.testBundle(for: KannaTutorialsTests.self).path(forResource: filename, ofType: "html"),
             let html = try? String(contentsOfFile: filePath, encoding: .utf8) else {
+            XCTFail()
             return
         }
 
diff --git a/Tests/KannaTests/KannaXMLTests.swift b/Tests/KannaTests/KannaXMLTests.swift
index ac001e3..e0299b4 100644
--- a/Tests/KannaTests/KannaXMLTests.swift
+++ b/Tests/KannaTests/KannaXMLTests.swift
@@ -30,7 +30,8 @@ import CoreFoundation
 class KannaXMLTests: XCTestCase {
     func testXml() {
         let filename = "test_XML_ExcelWorkbook"
-        guard let path = Bundle(for: KannaXMLTests.self).path(forResource: filename, ofType: "xml") else {
+        guard let path = Bundle.testBundle(for: KannaXMLTests.self).path(forResource: filename, ofType: "xml") else {
+            XCTFail()
             return
         }
         if let xml = try? Data(contentsOf: URL(fileURLWithPath: path)),
@@ -53,8 +54,7 @@ class KannaXMLTests: XCTestCase {
             }
 
             for row in doc.xpath("//ss:Row", namespaces: namespaces) {
-                for cell in row.xpath("//ss:Data", namespaces: namespaces) {
-                    print(cell.text!)
+                for _ in row.xpath("//ss:Data", namespaces: namespaces) {
                 }
             }
         } else {
@@ -74,7 +74,8 @@ class KannaXMLTests: XCTestCase {
 
     func testNamespaces() {
         let filename = "test_XML_ExcelWorkbook"
-        guard let path = Bundle(for: KannaXMLTests.self).path(forResource: filename, ofType: "xml") else {
+        guard let path = Bundle.testBundle(for: KannaXMLTests.self).path(forResource: filename, ofType: "xml") else {
+            XCTFail()
             return
         }
         if let xml = try? Data(contentsOf: URL(fileURLWithPath: path)),
@@ -91,9 +92,11 @@ class KannaXMLTests: XCTestCase {
     
     func testNamespaces_multipleNamespaces() {
     	// namespaces: "xmlns:a", "xmlns:r", "xmlns:p"
-    	let url = Bundle(for: KannaXMLTests.self).url(forResource: "pptx-presentation", withExtension: "xml")
-    	XCTAssertNotNil(url)
-    	let doc = try? XML(url: url!, encoding: .utf8)
+        guard let url = Bundle.testBundle(for: KannaXMLTests.self).url(forResource: "pptx-presentation", withExtension: "xml") else {
+            XCTFail()
+            return
+        }
+    	let doc = try? XML(url: url, encoding: .utf8)
     	XCTAssertNotNil(doc)
     	let nodes = Array(doc!.xpath("//p:sldId"))
     	XCTAssert(nodes.count == 1)
@@ -104,10 +107,11 @@ class KannaXMLTests: XCTestCase {
     }
 
     func testNamespaces_singleNamespace() {
-    	// namespaces: "xmlns"
-    	let url = Bundle(for: KannaXMLTests.self).url(forResource: "pptx-presentation", withExtension: "xml.rels")
-    	XCTAssertNotNil(url)
-    	let doc = try? XML(url: url!, encoding: .utf8)
+        guard let url = Bundle.testBundle(for: KannaXMLTests.self).url(forResource: "pptx-presentation", withExtension: "xml.rels") else {
+            XCTFail()
+            return
+        }
+    	let doc = try? XML(url: url, encoding: .utf8)
     	XCTAssertNotNil(doc)
     	let nodes1 = Array(doc!.xpath("//Relationship"))
     	XCTAssert(nodes1.count == 0)