diff --git a/dotnet-client-libraries/Quartz.NET/Quartz.NET/BackgroundJob.cs b/dotnet-client-libraries/Quartz.NET/Quartz.NET/BackgroundJob.cs
index bb023c4b7..2ad126dcd 100644
--- a/dotnet-client-libraries/Quartz.NET/Quartz.NET/BackgroundJob.cs
+++ b/dotnet-client-libraries/Quartz.NET/Quartz.NET/BackgroundJob.cs
@@ -1,7 +1,7 @@
 namespace Quartz.NET;
 public class BackgroundJob : IJob
 {
-    public async Task Execute(IJobExecutionContext context)
+    public async ValueTask Execute(IJobExecutionContext context, CancellationToken cancellationToken = default)
     {
         var jobDataMap = context.MergedJobDataMap;
 
diff --git a/dotnet-client-libraries/Quartz.NET/Quartz.NET/Program.cs b/dotnet-client-libraries/Quartz.NET/Quartz.NET/Program.cs
index 6bd1b7ac3..cce270a1e 100644
--- a/dotnet-client-libraries/Quartz.NET/Quartz.NET/Program.cs
+++ b/dotnet-client-libraries/Quartz.NET/Quartz.NET/Program.cs
@@ -14,7 +14,7 @@
     .WithIdentity(name: "SimpleRepeatingTrigger", group: "TriggerGroup")
     .WithSimpleSchedule(o => o
         .RepeatForever()
-        .WithIntervalInSeconds(5))
+        .WithInterval(TimeSpan.FromSeconds(5)))
     .Build();
 
 var host = Host.CreateDefaultBuilder()
@@ -25,7 +25,7 @@
             opt.UsePersistentStore(s =>
             {
                 s.UseSqlServer("Server=localhost,1433;Database=Quartz;User Id=sa;Password=<CONNECTION_STRING>;Encrypt=False;");
-                s.UseNewtonsoftJsonSerializer();
+                s.UseSystemTextJsonSerializer();
             });
         });
         services.AddQuartzHostedService(opt =>
@@ -37,5 +37,5 @@
 var schedulerFactory = host.Services.GetRequiredService<ISchedulerFactory>();
 var scheduler = await schedulerFactory.GetScheduler();
 
-await scheduler.ScheduleJob(job, trigger);
+await scheduler.ScheduleJob(job, trigger, ScheduleJobOptions.Replacing);
 await host.RunAsync();
\ No newline at end of file
diff --git a/dotnet-client-libraries/Quartz.NET/Quartz.NET/Quartz.NET.csproj b/dotnet-client-libraries/Quartz.NET/Quartz.NET/Quartz.NET.csproj
index 8ce967ea1..e81fe823c 100644
--- a/dotnet-client-libraries/Quartz.NET/Quartz.NET/Quartz.NET.csproj
+++ b/dotnet-client-libraries/Quartz.NET/Quartz.NET/Quartz.NET.csproj
@@ -8,11 +8,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Data.SqlClient" Version="6.1.1" />
+    <PackageReference Include="Microsoft.Data.SqlClient" Version="7.0.3" />
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="10.0.0" />
-    <PackageReference Include="Quartz" Version="3.19.1" />
-    <PackageReference Include="Quartz.Extensions.Hosting" Version="3.19.1" />
-    <PackageReference Include="Quartz.Serialization.Json" Version="3.19.1" />
+    <PackageReference Include="Quartz" Version="4.1.0" />
   </ItemGroup>
 
 </Project>