diff --git a/Package.swift b/Package.swift
index f443715..725d20d 100644
--- a/Package.swift
+++ b/Package.swift
@@ -11,6 +11,7 @@ import PackageDescription
 /// The CodeEditor package.
 let package = Package(
     name: "CodeEditor",
+    platforms: [.macOS(.v10_15)],
     products: [
         .library(
             name: "CodeEditor",
diff --git a/Tests/main.swift b/Tests/main.swift
index 5170d55..3fb3bcd 100644
--- a/Tests/main.swift
+++ b/Tests/main.swift
@@ -8,7 +8,7 @@
 import Adwaita
 import CodeEditor
 
-// swiftlint:disable missing_docs implicitly_unwrapped_optional no_magic_numbers
+// swiftlint:disable missing_docs
 
 @main
 struct Test: App {
@@ -17,7 +17,7 @@ struct Test: App {
     @State private var text = ""
 
     var scene: Scene {
-        Window(id: "main") { window in
+        Window(id: "main") { _ in
             ScrollView {
                 CodeEditor(text: $text)
                     .innerPadding()
@@ -41,4 +41,4 @@ struct Test: App {
 
 }
 
-// swiftlint:enable missing_docs implicitly_unwrapped_optional no_magic_numbers
+// swiftlint:enable missing_docs
diff --git a/dev.aparoksha.Demo.json b/dev.aparoksha.Demo.json
index 8284527..88e005c 100644
--- a/dev.aparoksha.Demo.json
+++ b/dev.aparoksha.Demo.json
@@ -44,7 +44,8 @@
       "build-commands": [
         "swift build -c debug --static-swift-stdlib",
         "install -Dm755 .build/debug/Test /app/bin/Test",
-        "swiftlint Sources"
+        "swiftlint Sources",
+        "swiftlint Tests"
       ]
     }
   ]