diff --git a/samples/ASP.NETCore/WebApplication/Controllers/BackdoorController.cs b/samples/ASP.NETCore/WebApplication/Controllers/BackdoorController.cs
index 96220d05..e7e0a188 100644
--- a/samples/ASP.NETCore/WebApplication/Controllers/BackdoorController.cs
+++ b/samples/ASP.NETCore/WebApplication/Controllers/BackdoorController.cs
@@ -22,9 +22,11 @@ public BackdoorController(IConfigCatClient configCatClient)
         // GET: api/backdoor/configcatchanged
         [HttpGet]
         [Route("configcatchanged")]
-        public void ConfigCatChanged()
+        public IActionResult ConfigCatChanged()
         {
             this.configCatClient.ForceRefresh();
+
+            return this.Ok("configCatClient.ForceRefresh() invoked");
         }
     }
 }
\ No newline at end of file
diff --git a/samples/ASP.NETCore/WebApplication/Startup.cs b/samples/ASP.NETCore/WebApplication/Startup.cs
index f571b91e..15a9d660 100644
--- a/samples/ASP.NETCore/WebApplication/Startup.cs
+++ b/samples/ASP.NETCore/WebApplication/Startup.cs
@@ -4,7 +4,6 @@
 using Microsoft.Extensions.DependencyInjection;
 
 using ConfigCat.Client;
-using ConfigCat.Client.Configuration;
 
 namespace WebApplication
 {
diff --git a/samples/ASP.NETCore/WebApplication/WebApplication.csproj b/samples/ASP.NETCore/WebApplication/WebApplication.csproj
index 6299f145..f9a3a2b3 100644
--- a/samples/ASP.NETCore/WebApplication/WebApplication.csproj
+++ b/samples/ASP.NETCore/WebApplication/WebApplication.csproj
@@ -5,9 +5,12 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="ConfigCat.Client" Version="2.1.4" />
+    <PackageReference Include="ConfigCat.Client" Version="2.5.6" />
     <PackageReference Include="Microsoft.AspNetCore.All" Version="2.2.7" />
+    <PackageReference Include="Microsoft.IdentityModel.Clients.ActiveDirectory" Version="5.2.4" />
     <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="3.0.0" />
+    <PackageReference Include="System.Net.Http" Version="4.3.4" />
+    <PackageReference Include="System.Net.Security" Version="4.3.2" />
   </ItemGroup>
 
   <ItemGroup>