diff --git a/Package.swift b/Package.swift
index c97be4eb..12fc4f34 100644
--- a/Package.swift
+++ b/Package.swift
@@ -18,7 +18,7 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/apple/swift-log.git", from: "1.0.0"),
-        .package(url: "https://github.com/apple/swift-crypto.git", "1.0.0"..<"3.0.0"),
+        .package(url: "https://github.com/apple/swift-crypto.git", "1.0.0"..<"4.0.0"),
         .package(url: "https://github.com/swift-server/async-http-client.git", from: "1.10.0"),
         .package(url: "https://github.com/apple/swift-docc-plugin", from: "1.0.0"),
         .package(url: "https://github.com/apple/swift-nio.git", from: "2.42.0"),
diff --git a/Sources/APNS/APNSClient.swift b/Sources/APNS/APNSClient.swift
index 50f4e4f0..e6beebeb 100644
--- a/Sources/APNS/APNSClient.swift
+++ b/Sources/APNS/APNSClient.swift
@@ -22,6 +22,7 @@ import NIOCore
 import NIOHTTP1
 import NIOSSL
 import NIOTLS
+import NIOPosix
 
 /// A client to talk with the Apple Push Notification services.
 public final class APNSClient<Decoder: APNSJSONDecoder, Encoder: APNSJSONEncoder>: APNSClientProtocol {
@@ -100,19 +101,17 @@ public final class APNSClient<Decoder: APNSJSONDecoder, Encoder: APNSJSONEncoder
         httpClientConfiguration.httpVersion = .automatic
         httpClientConfiguration.proxy = configuration.proxy
 
-        let httpClientEventLoopGroupProvider: HTTPClient.EventLoopGroupProvider
-
         switch eventLoopGroupProvider {
         case .shared(let eventLoopGroup):
-            httpClientEventLoopGroupProvider = .shared(eventLoopGroup)
+            self.httpClient = HTTPClient(
+                eventLoopGroupProvider: .shared(eventLoopGroup),
+                configuration: httpClientConfiguration
+            )
         case .createNew:
-            httpClientEventLoopGroupProvider = .createNew
+            self.httpClient = HTTPClient(
+                configuration: httpClientConfiguration
+            )
         }
-
-        self.httpClient = HTTPClient(
-            eventLoopGroupProvider: httpClientEventLoopGroupProvider,
-            configuration: httpClientConfiguration
-        )
     }
 
     /// Shuts down the client and event loop gracefully. This function is clearly an outlier in that it uses a completion
diff --git a/Tests/APNSTests/APNSAuthenticationTokenManagerTests.swift b/Tests/APNSTests/APNSAuthenticationTokenManagerTests.swift
index bad0bfc9..61e5857a 100644
--- a/Tests/APNSTests/APNSAuthenticationTokenManagerTests.swift
+++ b/Tests/APNSTests/APNSAuthenticationTokenManagerTests.swift
@@ -15,6 +15,7 @@
 @testable import APNSCore
 import Crypto
 import XCTest
+import NIOConcurrencyHelpers
 
 final class APNSAuthenticationTokenManagerTests: XCTestCase {
     private static let signingKey = """
@@ -129,11 +130,19 @@ final class TestClock<Duration: DurationProtocol & Hashable>: Clock {
     }
     
     let minimumResolution: Duration = .zero
-    var now: Instant
+    private let _now: NIOLockedValueBox<Instant>
+    
+    var now: Instant {
+        get {
+            self._now.withLockedValue { $0 }
+        } set {
+            self._now.withLockedValue { $0 = newValue }
+        }
+    }
 
     
     public init(now: Instant = .init()) {
-        self.now = .init()
+        self._now = .init(now)
     }
     
     public func sleep(until deadline: Instant, tolerance: Duration? = nil) async throws {