diff --git a/Package.swift b/Package.swift
index f48d6db..ac29088 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:6.0
 //
 //  Package.swift
 //  SwiftSSDP
@@ -24,7 +24,10 @@ let package = Package(
     targets: [
         .target(
             name: "SwiftSSDP",
-            path: "Sources/SwiftSSDP"
+            path: "Sources/SwiftSSDP",
+            swiftSettings: [
+                .swiftLanguageMode(.v6),
+            ]
         ),
         .testTarget(
             name: "SwiftSSDPTests",
@@ -32,6 +35,9 @@ let package = Package(
             path: "Tests/SwiftSSDPTests",
             resources: [
                 .copy("Fixtures"),
+            ],
+            swiftSettings: [
+                .swiftLanguageMode(.v6),
             ]
         ),
     ]
diff --git a/README.md b/README.md
index 55a9254..4cd17e8 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # SwiftSSDP
 
-![Swift 5.9](https://img.shields.io/badge/swift-5.9-orange.svg?style=for-the-badge&logo=swift)
+![Swift 6](https://img.shields.io/badge/swift-6-orange.svg?style=for-the-badge&logo=swift)
 ![Platforms](https://img.shields.io/badge/platforms-iOS%20%7C%20macOS%20%7C%20tvOS-blue.svg?style=for-the-badge&logo=apple)
 [![CI](https://img.shields.io/github/actions/workflow/status/happycodelucky/SwiftSSDP/ci.yml?style=for-the-badge&label=ci)](https://github.com/happycodelucky/SwiftSSDP/actions/workflows/ci.yml)
 [![Release](https://img.shields.io/github/v/release/happycodelucky/SwiftSSDP?style=for-the-badge)](https://github.com/happycodelucky/SwiftSSDP/releases/latest)
@@ -213,10 +213,12 @@ Categories: `discovery`, `transport`, `listener`, `parser`.
 
 ## Requirements
 
-- **Swift:** 5.9+
-- **Xcode:** 15+
+- **Swift:** 6.0+ (Swift 6 language mode with strict concurrency checking)
+- **Xcode:** 16+
 - **Platforms:** iOS 17, macOS 14, tvOS 17 (watchOS not supported — multicast is unavailable on watchOS)
 
+The library compiles cleanly under `-strict-concurrency=complete -warnings-as-errors`. Public API surface is fully `Sendable` so it composes naturally with actor-isolated callers.
+
 ## License
 
 MIT — see [LICENSE](LICENSE).
diff --git a/Sources/SwiftSSDP/SwiftSSDP.swift b/Sources/SwiftSSDP/SwiftSSDP.swift
index e0710af..94b666b 100644
--- a/Sources/SwiftSSDP/SwiftSSDP.swift
+++ b/Sources/SwiftSSDP/SwiftSSDP.swift
@@ -17,5 +17,5 @@ public enum SwiftSSDP {
     ///
     /// > Note: This constant is rewritten by `.github/workflows/release.yml` whenever a
     /// > release is published. Do not edit it by hand outside of that workflow.
-    public static let version = "2.0.0"
+    public static let version = "2.1.0"
 }