diff --git a/src/Temporalio/Temporalio.csproj b/src/Temporalio/Temporalio.csproj
index cfdbcfb0..1eb5023c 100644
--- a/src/Temporalio/Temporalio.csproj
+++ b/src/Temporalio/Temporalio.csproj
@@ -20,7 +20,7 @@
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net462' Or '$(TargetFramework)' == 'netstandard2.0'">
     <PackageReference Include="Microsoft.Bcl.HashCode" Version="1.1.1" />
-    <PackageReference Include="System.Text.Json" Version="6.0.7" />
+    <PackageReference Include="System.Text.Json" Version="8.0.4" />
   </ItemGroup>
 
   <!-- Allow tests to use internals -->
diff --git a/tests/Temporalio.Tests/Extensions/Hosting/TemporalWorkerServiceTests.cs b/tests/Temporalio.Tests/Extensions/Hosting/TemporalWorkerServiceTests.cs
index e9981823..bd247a67 100644
--- a/tests/Temporalio.Tests/Extensions/Hosting/TemporalWorkerServiceTests.cs
+++ b/tests/Temporalio.Tests/Extensions/Hosting/TemporalWorkerServiceTests.cs
@@ -206,8 +206,8 @@ public async Task TemporalWorkerService_ExecuteAsync_MultipleWorkers()
                 ["scoped-other2"] = $"tq: {taskQueue2}, counter: 6",
             },
             result);
-    }
-
+    }
+
     [Workflow]
     public class TickingWorkflow
     {
@@ -221,7 +221,7 @@ public async Task RunAsync()
             }
         }
     }
-
+
     [Fact]
     public async Task TemporalWorkerService_WorkerClientReplacement_UsesNewClient()
     {
@@ -265,7 +265,7 @@ public async Task TemporalWorkerService_WorkerClientReplacement_UsesNewClient()
         // Start the host
         using var tokenSource = new CancellationTokenSource();
         using var host = bld.Build();
-        var hostTask = Task.Run(() => host.RunAsync(tokenSource.Token));
+        var hostTask = Task.Run(() => host.RunAsync(tokenSource.Token));
 
         // Confirm the first ticking workflow has completed a task but not the second workflow
         await AssertMore.HasEventEventuallyAsync(handle1, e => e.WorkflowTaskCompletedEventAttributes != null);
@@ -300,9 +300,13 @@ public class WorkflowV2
         public async Task<string> RunAsync() => "done-v2";
     }
 
-    [Fact]
+    [SkippableFact]
     public async Task TemporalWorkerService_ExecuteAsync_MultipleVersionsSameQueue()
     {
+        // This only applies to legacy versioning and therefore is ok to skip (and remove in the
+        // future)
+        throw new SkipException("Since 1.24 this test is slow because legacy versioning has a known slowdown");
+#pragma warning disable IDE0035, CS0162 // We know the below is now dead code
         var taskQueue = $"tq-{Guid.NewGuid()}";
         // Build with two workers on same queue but different versions
         var bld = Host.CreateApplicationBuilder();