diff --git a/Example.swiftpm/.swiftpm/xcode/xcshareddata/xcschemes/SwiftUIExample.xcscheme b/Example.swiftpm/.swiftpm/xcode/xcshareddata/xcschemes/SwiftUIExample.xcscheme
index b90b0e9..fa7c306 100644
--- a/Example.swiftpm/.swiftpm/xcode/xcshareddata/xcschemes/SwiftUIExample.xcscheme
+++ b/Example.swiftpm/.swiftpm/xcode/xcshareddata/xcschemes/SwiftUIExample.xcscheme
@@ -50,6 +50,12 @@
             ReferencedContainer = "container:">
          </BuildableReference>
       </BuildableProductRunnable>
+      <CommandLineArguments>
+         <CommandLineArgument
+            argument = "-AppleLanguages (en)"
+            isEnabled = "YES">
+         </CommandLineArgument>
+      </CommandLineArguments>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"
diff --git a/Example.swiftpm/.swiftpm/xcode/xcshareddata/xcschemes/UIKitExample.xcscheme b/Example.swiftpm/.swiftpm/xcode/xcshareddata/xcschemes/UIKitExample.xcscheme
index 35ed1f6..8fcd171 100644
--- a/Example.swiftpm/.swiftpm/xcode/xcshareddata/xcschemes/UIKitExample.xcscheme
+++ b/Example.swiftpm/.swiftpm/xcode/xcshareddata/xcschemes/UIKitExample.xcscheme
@@ -51,6 +51,12 @@
             ReferencedContainer = "container:">
          </BuildableReference>
       </BuildableProductRunnable>
+      <CommandLineArguments>
+         <CommandLineArgument
+            argument = "-AppleLanguages (ja)"
+            isEnabled = "YES">
+         </CommandLineArgument>
+      </CommandLineArguments>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"
diff --git a/Example.swiftpm/Package.swift b/Example.swiftpm/Package.swift
index a8587d1..c36b981 100644
--- a/Example.swiftpm/Package.swift
+++ b/Example.swiftpm/Package.swift
@@ -9,6 +9,7 @@ import AppleProductTypes
 
 let package = Package(
     name: "Example",
+    defaultLocalization: "en",
     platforms: [
         .iOS("15.2")
     ],
diff --git a/Example.swiftpm/Source/SwiftUIExampleModule/Resource/en.lproj/Localizable.strings b/Example.swiftpm/Source/SwiftUIExampleModule/Resource/en.lproj/Localizable.strings
new file mode 100644
index 0000000..e69de29
diff --git a/Example.swiftpm/Source/SwiftUIExampleModule/Resource/ja.lproj/Localizable.strings b/Example.swiftpm/Source/SwiftUIExampleModule/Resource/ja.lproj/Localizable.strings
new file mode 100644
index 0000000..e69de29
diff --git a/Example.swiftpm/Source/UIKItExampleModule/Resource/en.lproj/Localizable.strings b/Example.swiftpm/Source/UIKItExampleModule/Resource/en.lproj/Localizable.strings
new file mode 100644
index 0000000..e69de29
diff --git a/Example.swiftpm/Source/UIKItExampleModule/Resource/ja.lproj/Localizable.strings b/Example.swiftpm/Source/UIKItExampleModule/Resource/ja.lproj/Localizable.strings
new file mode 100644
index 0000000..e69de29
diff --git a/Package.swift b/Package.swift
index 804bdb5..8210855 100644
--- a/Package.swift
+++ b/Package.swift
@@ -5,6 +5,7 @@ import PackageDescription
 
 let package = Package(
     name: "DebugMenu",
+    defaultLocalization: "en",
     platforms: [.iOS(.v14)],
     products: [
         .library(
@@ -14,7 +15,10 @@ let package = Package(
     ],
     targets: [
         .target(
-            name: "DebugMenu"
+            name: "DebugMenu",
+            resources: [
+                .process("Resource"),
+            ]
         ),
         .testTarget(
             name: "DebugMenuTests",
diff --git a/Sources/DebugMenu/Extensions/L10n.swift b/Sources/DebugMenu/Extensions/L10n.swift
new file mode 100644
index 0000000..5bf0e75
--- /dev/null
+++ b/Sources/DebugMenu/Extensions/L10n.swift
@@ -0,0 +1,12 @@
+import Foundation
+
+extension String {
+    static var showWidget: String { makeLocalizaedString("Show widget") }
+    static var hideWidget: String { makeLocalizaedString("Hide widget") }
+    static var hideUntilNextLaunch: String { makeLocalizaedString("Hide until next launch") }
+    static var cancel: String { makeLocalizaedString("Cancel") }
+    
+    private static func makeLocalizaedString(_ key: String) -> String {
+        NSLocalizedString(key, bundle: .module, comment: "")
+    }
+}
diff --git a/Sources/DebugMenu/Resource/en.lproj/Localizable.strings b/Sources/DebugMenu/Resource/en.lproj/Localizable.strings
new file mode 100644
index 0000000..c1016ea
--- /dev/null
+++ b/Sources/DebugMenu/Resource/en.lproj/Localizable.strings
@@ -0,0 +1,4 @@
+"Cancel" = "Cancel";
+"Hide widget" = "Hide widget";
+"Show widget" = "Show widget";
+"Hide until next launch" = "Hide until next launch";
diff --git a/Sources/DebugMenu/Resource/ja.lproj/Localizable.strings b/Sources/DebugMenu/Resource/ja.lproj/Localizable.strings
new file mode 100644
index 0000000..d844a1f
--- /dev/null
+++ b/Sources/DebugMenu/Resource/ja.lproj/Localizable.strings
@@ -0,0 +1,4 @@
+"Cancel" = "キャンセル";
+"Hide widget" = "ウィジェットを非表示";
+"Show widget" = "ウィジェットを表示";
+"Hide until next launch" = "次回起動までランチャーを非表示";
diff --git a/Sources/DebugMenu/View/FloatingViewController.swift b/Sources/DebugMenu/View/FloatingViewController.swift
index ce31d40..560e012 100644
--- a/Sources/DebugMenu/View/FloatingViewController.swift
+++ b/Sources/DebugMenu/View/FloatingViewController.swift
@@ -113,7 +113,7 @@ internal class FloatingViewController: UIViewController {
         let sheet = UIAlertController(title: "DebugMenu", message: nil, preferredStyle: .alert)
         sheet.addAction(
             .init(
-                title: "Hide until next launch",
+                title: .hideUntilNextLaunch,
                 style: .destructive,
                 handler: { [weak self] _ in
                     self?.launchView.isHidden = true
@@ -124,7 +124,7 @@ internal class FloatingViewController: UIViewController {
         if widgetView.isHidden {
             sheet.addAction(
                 .init(
-                    title: "Show widget",
+                    title: .showWidget,
                     style: .default,
                     handler: { [weak self] _ in
                         self?.widgetView.show()
@@ -134,7 +134,7 @@ internal class FloatingViewController: UIViewController {
         } else {
             sheet.addAction(
                 .init(
-                    title: "Hide widget",
+                    title: .hideWidget,
                     style: .destructive,
                     handler: { [weak self] _ in
                         self?.widgetView.hide()
@@ -142,7 +142,7 @@ internal class FloatingViewController: UIViewController {
                 )
             )
         }
-        sheet.addAction(.init(title: "Cancel", style: .cancel, handler: nil))
+        sheet.addAction(.init(title: .cancel, style: .cancel, handler: nil))
         present(sheet, animated: true, completion: nil)
     }
 }