diff --git a/src/Dockerfile b/src/Dockerfile
index b059d3e..553d7f4 100644
--- a/src/Dockerfile
+++ b/src/Dockerfile
@@ -1,5 +1,5 @@
 # Stage 1: Build
-FROM mcr.microsoft.com/dotnet/sdk:6.0 as source
+FROM mcr.microsoft.com/dotnet/sdk:8.0 as source
 ARG target="Release"
 
 RUN apt-get update && apt-get install unzip -y
@@ -18,7 +18,7 @@ RUN dotnet publish -c $target -o obj/docker/publish
 RUN cp -r /src/obj/docker/publish /OpenIdConnectServerMock
 
 # Stage 2: Release
-FROM mcr.microsoft.com/dotnet/aspnet:6.0 as release
+FROM mcr.microsoft.com/dotnet/aspnet:8.0 as release
 ARG target="Release"
 
 RUN apt-get update && apt-get install curl -y && rm -rf /var/lib/apt/lists/*
diff --git a/src/Helpers/OptionsHelper.cs b/src/Helpers/OptionsHelper.cs
index 3c59eb2..e92f8d0 100644
--- a/src/Helpers/OptionsHelper.cs
+++ b/src/Helpers/OptionsHelper.cs
@@ -11,9 +11,9 @@ public static void ConfigureOptions<T>(string optionsStr)
             var targetFields = typeof(T).GetFields();
             var jValueValueProp = typeof(JValue).GetProperty(nameof(JValue.Value));
             Array.ForEach(targetFields, k => {
-                if (options.ContainsKey(k.Name)) {
+                if (options != null && options.ContainsKey(k.Name)) {
                     var fieldJValue = options[k.Name] as JValue;
-                    var fieldValue = jValueValueProp.GetValue(fieldJValue);
+                    var fieldValue = jValueValueProp?.GetValue(fieldJValue);
                     k.SetValue(null, fieldValue);
                 }
             });
diff --git a/src/Middlewares/BasePathMiddleware.cs b/src/Middlewares/BasePathMiddleware.cs
index 79eb352..0abeffc 100644
--- a/src/Middlewares/BasePathMiddleware.cs
+++ b/src/Middlewares/BasePathMiddleware.cs
@@ -20,7 +20,7 @@ public async Task Invoke(HttpContext context)
         {
             var basePath = Config.GetAspNetServicesOptions().BasePath;
             var request = context.Request;
-            if(request.Path.Value.Length > basePath.Length)
+            if(request.Path.Value?.Length > basePath.Length)
             {
                 request.Path = request.Path.Value.Substring(basePath.Length);
                 context.SetIdentityServerBasePath(basePath);
diff --git a/src/OpenIdConnectServerMock.csproj b/src/OpenIdConnectServerMock.csproj
index 4b5c2fd..c07da1a 100644
--- a/src/OpenIdConnectServerMock.csproj
+++ b/src/OpenIdConnectServerMock.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
     <GenerateEmbeddedFilesManifest>true</GenerateEmbeddedFilesManifest>
@@ -26,11 +26,11 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Duende.IdentityServer" Version="6.3.6" />
-    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="6.0.24" />
-    <PackageReference Include="Microsoft.Extensions.FileProviders.Embedded" Version="6.0.24" />
-    <PackageReference Include="Serilog.AspNetCore" Version="6.1.0" />
-    <PackageReference Include="YamlDotNet" Version="13.7.0" />
+    <PackageReference Include="Duende.IdentityServer" Version="7.0.3" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="8.0.3" />
+    <PackageReference Include="Microsoft.Extensions.FileProviders.Embedded" Version="8.0.3" />
+    <PackageReference Include="Serilog.AspNetCore" Version="8.0.1" />
+    <PackageReference Include="YamlDotNet" Version="15.1.2" />
   </ItemGroup>
 
 </Project>
diff --git a/src/Program.cs b/src/Program.cs
index 1f20854..640acd8 100644
--- a/src/Program.cs
+++ b/src/Program.cs
@@ -1,5 +1,4 @@
-using Duende.IdentityServer.Hosting;
-using Microsoft.Extensions.FileProviders;
+using Microsoft.Extensions.FileProviders;
 using OpenIdConnectServer;
 using OpenIdConnectServer.Helpers;
 using OpenIdConnectServer.JsonConverters;
@@ -36,7 +35,7 @@
         });
 
 builder.Services
-    .AddIdentityServer(options =>
+    .AddIdentityServerBuilder(options =>
         {
             var configuredOptions = Config.GetServerOptions();
             MergeHelper.Merge(configuredOptions, options);