From cc81cc76a25f88a90c3c660f3034ffc76e04940f Mon Sep 17 00:00:00 2001
From: trevor020601 <trevorkarl5@gmail.com>
Date: Sun, 4 Jan 2026 16:46:53 -0600
Subject: [PATCH] Utilize Lock API when targeting .NET 9+

---
 src/MinimalWorker/BackgroundWorkerExtensions.cs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/MinimalWorker/BackgroundWorkerExtensions.cs b/src/MinimalWorker/BackgroundWorkerExtensions.cs
index 17d827a..5e04614 100644
--- a/src/MinimalWorker/BackgroundWorkerExtensions.cs
+++ b/src/MinimalWorker/BackgroundWorkerExtensions.cs
@@ -66,7 +66,12 @@ public static partial class BackgroundWorkerExtensions
     public static readonly List<WorkerRegistration> _registrations = new();
     private static int _registrationCounter = 0;
     private static bool _isInitialized = false;
-    private static readonly object _lock = new();
+
+    #if NET9_0_OR_GREATER
+        private static readonly Lock _lock = new();
+    #else
+        private static readonly object _lock = new();
+    #endif
 
     /// <summary>
     /// Internal flag to control whether to use Environment.Exit on validation failure.