diff --git a/.swiftpm/configuration/Package.resolved b/.swiftpm/configuration/Package.resolved
new file mode 100644
index 00000000..023d6322
--- /dev/null
+++ b/.swiftpm/configuration/Package.resolved
@@ -0,0 +1,23 @@
+{
+  "pins" : [
+    {
+      "identity" : "swift-docc-plugin",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-docc-plugin",
+      "state" : {
+        "revision" : "2eb22993b3dfd0c0d32729b357c8dabb6cd44680",
+        "version" : "1.4.2"
+      }
+    },
+    {
+      "identity" : "swift-docc-symbolkit",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/swiftlang/swift-docc-symbolkit",
+      "state" : {
+        "revision" : "b45d1f2ed151d057b54504d653e0da5552844e34",
+        "version" : "1.0.0"
+      }
+    }
+  ],
+  "version" : 2
+}
diff --git a/Package.swift b/Package.swift
index 871d5861..43b0a8aa 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:6.0
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
diff --git a/Sources/MusadoraKit/Requests/MDataRequest.swift b/Sources/MusadoraKit/Requests/MDataRequest.swift
index 5063024f..455ac1e7 100644
--- a/Sources/MusadoraKit/Requests/MDataRequest.swift
+++ b/Sources/MusadoraKit/Requests/MDataRequest.swift
@@ -6,6 +6,7 @@
 //
 
 import Foundation
+@preconcurrency import MusicKit
 
 /// A request structure for fetching data from an arbitrary Apple Music API endpoint.
 ///
@@ -37,7 +38,7 @@ public struct MDataRequest {
 
   /// The URL request used to specify details for the API call, such as endpoint, method, and headers.
   public let urlRequest: URLRequest
-  
+
   /// Initializes a new data request using the specified URL request and developer token.
   ///
   /// - Parameters:
@@ -55,9 +56,11 @@ public struct MDataRequest {
   /// - Returns: A `MusicDataResponse` object containing the outcome of the API call.
   /// - Throws: An error if there's a problem initiating or receiving the response.
   public func response() async throws -> MusicDataResponse {
-    MusicDataRequest.tokenProvider = MDeveloperTokenProvider(developerToken: developerToken)
+    let token = self.developerToken
+    MusicDataRequest.tokenProvider = await MDeveloperTokenProvider(developerToken: token)
     let request = MusicDataRequest(urlRequest: urlRequest)
     let response = try await request.response()
     return response
   }
 }
+
diff --git a/Sources/MusadoraKit/Requests/MDeveloperTokenProvider.swift b/Sources/MusadoraKit/Requests/MDeveloperTokenProvider.swift
index 745c63b6..a850a1b1 100644
--- a/Sources/MusadoraKit/Requests/MDeveloperTokenProvider.swift
+++ b/Sources/MusadoraKit/Requests/MDeveloperTokenProvider.swift
@@ -27,7 +27,8 @@ import Foundation
 /// // Now proceed with sending a MusicDataRequest
 /// ```
 ///
-public class MDeveloperTokenProvider: MusicTokenProvider, @unchecked Sendable {
+@MainActor
+final public class MDeveloperTokenProvider: MusicTokenProvider, Sendable {
 
   /// The **custom** developer token used to authenticate Apple Music API requests.
   private var developerToken: String = ""
diff --git a/Sources/MusadoraKit/Requests/MUserRequest.swift b/Sources/MusadoraKit/Requests/MUserRequest.swift
index af80a4b7..354e202b 100644
--- a/Sources/MusadoraKit/Requests/MUserRequest.swift
+++ b/Sources/MusadoraKit/Requests/MUserRequest.swift
@@ -6,6 +6,7 @@
 //
 
 import Foundation
+@preconcurrency import MusicKit
 
 /// A request structure for fetching data from an arbitrary Apple Music API endpoint requiring user authentication.
 ///