diff --git a/test/Polly.Core.Tests/Hedging/Controller/HedgingExecutionContextTests.cs b/test/Polly.Core.Tests/Hedging/Controller/HedgingExecutionContextTests.cs
index 078a0979483..eeb51eadfa4 100644
--- a/test/Polly.Core.Tests/Hedging/Controller/HedgingExecutionContextTests.cs
+++ b/test/Polly.Core.Tests/Hedging/Controller/HedgingExecutionContextTests.cs
@@ -32,7 +32,7 @@ public HedgingExecutionContextTests()
             {
                 { Exception: ApplicationException } => true,
                 { Result: DisposableResult result } when result.Name == Handled => true,
-                _ => false
+                _ => false,
             },
             args => Generator(args));
 
diff --git a/test/Polly.Core.Tests/Hedging/Controller/TaskExecutionTests.cs b/test/Polly.Core.Tests/Hedging/Controller/TaskExecutionTests.cs
index ae6975364f3..c010fe9359e 100644
--- a/test/Polly.Core.Tests/Hedging/Controller/TaskExecutionTests.cs
+++ b/test/Polly.Core.Tests/Hedging/Controller/TaskExecutionTests.cs
@@ -34,7 +34,7 @@ public TaskExecutionTests()
         {
             { Exception: ApplicationException } => true,
             { Result: DisposableResult result } when result.Name == Handled => true,
-            _ => false
+            _ => false,
         }, args => Generator(args));
 
         CreateSnapshot();
diff --git a/test/Polly.Core.Tests/Issues/IssuesTests.HandleMultipleResults_898.cs b/test/Polly.Core.Tests/Issues/IssuesTests.HandleMultipleResults_898.cs
index 10875bac8c5..b0f6512bd6e 100644
--- a/test/Polly.Core.Tests/Issues/IssuesTests.HandleMultipleResults_898.cs
+++ b/test/Polly.Core.Tests/Issues/IssuesTests.HandleMultipleResults_898.cs
@@ -21,7 +21,7 @@ public void HandleMultipleResults_898()
 
                 // handle int results
                 { Result: int res } when res == -1 => PredicateResult.True(),
-                _ => PredicateResult.False()
+                _ => PredicateResult.False(),
             },
             OnRetry = args =>
             {
diff --git a/test/Polly.TestUtils/FakeTelemetryListener.cs b/test/Polly.TestUtils/FakeTelemetryListener.cs
index cb0cb17ec59..817e731df5e 100644
--- a/test/Polly.TestUtils/FakeTelemetryListener.cs
+++ b/test/Polly.TestUtils/FakeTelemetryListener.cs
@@ -1,11 +1,16 @@
 using Polly.Telemetry;
 
+#if !NET10_0_OR_GREATER
+#pragma warning disable SA1121
+using Lock = System.Object;
+#endif
+
 namespace Polly.TestUtils;
 
 public sealed class FakeTelemetryListener : TelemetryListener
 {
     private readonly Action<TelemetryEventArguments<object, object>> _callback;
-    private readonly object _syncRoot = new();
+    private readonly Lock _syncRoot = new();
 
     public FakeTelemetryListener(Action<TelemetryEventArguments<object, object>> callback) => _callback = callback;
 
diff --git a/test/Polly.TestUtils/TestUtilities.cs b/test/Polly.TestUtils/TestUtilities.cs
index a24bdd88176..da9f516b33f 100644
--- a/test/Polly.TestUtils/TestUtilities.cs
+++ b/test/Polly.TestUtils/TestUtilities.cs
@@ -106,11 +106,11 @@ public static TelemetryEventArguments<object, object> AsObjectArguments<T, TArgs
             _ => Outcome.FromResult<object>(args.Outcome!.Value.Result),
         };
 
-        return new TelemetryEventArguments<object, object>(
-                args.Source,
-                args.Event,
-                args.Context,
-                args.Arguments!,
-                outcome);
+        return new(
+            args.Source,
+            args.Event,
+            args.Context,
+            args.Arguments!,
+            outcome);
     }
 }