diff --git a/NATS.Client.sln b/NATS.Client.sln
index 6de6c8971..ee9dac34d 100644
--- a/NATS.Client.sln
+++ b/NATS.Client.sln
@@ -99,7 +99,9 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NATS.Net", "src\NATS.Net\NA
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NATS.Net.DocsExamples", "tests\NATS.Net.DocsExamples\NATS.Net.DocsExamples.csproj", "{389C05EB-A0B3-4097-8C1F-4D55818438CC}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NATS.Client.Hosting.Tests", "tests\NATS.Client.Hosting.Tests\NATS.Client.Hosting.Tests.csproj", "{766C2486-34C3-4DD1-B31C-540C17C044B0}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NATS.Extensions.Microsoft.DependencyInjection.Tests", "tests\NATS.Extensions.Microsoft.DependencyInjection.Tests\NATS.Extensions.Microsoft.DependencyInjection.Tests.csproj", "{766C2486-34C3-4DD1-B31C-540C17C044B0}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NATS.Extensions.Microsoft.DependencyInjection", "src\NATS.Extensions.Microsoft.DependencyInjection\NATS.Extensions.Microsoft.DependencyInjection.csproj", "{2EA0EB68-1AA4-40AC-8FA2-B51532075567}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Example.OpenTelemetry", "sandbox\Example.OpenTelemetry\Example.OpenTelemetry.csproj", "{474BA453-9CFF-41C2-B2E7-ADD92CC93E86}"
 EndProject
@@ -271,6 +273,10 @@ Global
 		{766C2486-34C3-4DD1-B31C-540C17C044B0}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{766C2486-34C3-4DD1-B31C-540C17C044B0}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{766C2486-34C3-4DD1-B31C-540C17C044B0}.Release|Any CPU.Build.0 = Release|Any CPU
+		{2EA0EB68-1AA4-40AC-8FA2-B51532075567}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{2EA0EB68-1AA4-40AC-8FA2-B51532075567}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{2EA0EB68-1AA4-40AC-8FA2-B51532075567}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{2EA0EB68-1AA4-40AC-8FA2-B51532075567}.Release|Any CPU.Build.0 = Release|Any CPU
 		{474BA453-9CFF-41C2-B2E7-ADD92CC93E86}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{474BA453-9CFF-41C2-B2E7-ADD92CC93E86}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{474BA453-9CFF-41C2-B2E7-ADD92CC93E86}.Release|Any CPU.ActiveCfg = Release|Any CPU
@@ -325,6 +331,7 @@ Global
 		{6A7B9B9F-BFA4-4A6D-9006-0AAF597FC6DD} = {4827B3EC-73D8-436D-AE2A-5E29AC95FD0C}
 		{389C05EB-A0B3-4097-8C1F-4D55818438CC} = {C526E8AB-739A-48D7-8FC4-048978C9B650}
 		{766C2486-34C3-4DD1-B31C-540C17C044B0} = {C526E8AB-739A-48D7-8FC4-048978C9B650}
+		{2EA0EB68-1AA4-40AC-8FA2-B51532075567} = {4827B3EC-73D8-436D-AE2A-5E29AC95FD0C}
 		{474BA453-9CFF-41C2-B2E7-ADD92CC93E86} = {95A69671-16CA-4133-981C-CC381B7AAA30}
 		{B8554582-DE19-41A2-9784-9B27C9F22429} = {C526E8AB-739A-48D7-8FC4-048978C9B650}
 	EndGlobalSection
diff --git a/src/NATS.Extensions.Microsoft.DependencyInjection/NatsBuilder.cs b/src/NATS.Extensions.Microsoft.DependencyInjection/NatsBuilder.cs
index 905c54553..73ab65b82 100644
--- a/src/NATS.Extensions.Microsoft.DependencyInjection/NatsBuilder.cs
+++ b/src/NATS.Extensions.Microsoft.DependencyInjection/NatsBuilder.cs
@@ -1,4 +1,3 @@
-using System.Text.Json;
 using System.Text.Json.Serialization;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.DependencyInjection.Extensions;
@@ -13,7 +12,7 @@ public class NatsBuilder
     private int _poolSize = 1;
     private Func<NatsOpts, NatsOpts>? _configureOpts;
     private Action<NatsConnection>? _configureConnection;
-    private object? _diKey;
+    private object? _diKey = null;
 
     public NatsBuilder(IServiceCollection services)
         => _services = services;
diff --git a/src/NATS.Extensions.Microsoft.DependencyInjection/NatsHostingExtensions.cs b/src/NATS.Extensions.Microsoft.DependencyInjection/NatsHostingExtensions.cs
index b2789e225..94226e274 100644
--- a/src/NATS.Extensions.Microsoft.DependencyInjection/NatsHostingExtensions.cs
+++ b/src/NATS.Extensions.Microsoft.DependencyInjection/NatsHostingExtensions.cs
@@ -1,7 +1,4 @@
 using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.DependencyInjection.Extensions;
-using Microsoft.Extensions.Logging;
-using NATS.Client.Core;
 
 namespace NATS.Extensions.Microsoft.DependencyInjection;