diff --git a/samples/backend/csharp/ChatProtocolBackend.csproj b/samples/backend/csharp/ChatProtocolBackend.csproj
index 69b7a54..fd1b56f 100644
--- a/samples/backend/csharp/ChatProtocolBackend.csproj
+++ b/samples/backend/csharp/ChatProtocolBackend.csproj
@@ -10,7 +10,7 @@
     <PackageReference Include="Azure.Identity" Version="1.11.4" />
     <PackageReference Include="Azure.Security.KeyVault.Secrets" Version="4.6.0" />  
     <PackageReference Include="Microsoft.SemanticKernel" Version="1.7.1" />
-    <PackageReference Include="System.Text.Json" Version="8.0.4" />
+    <PackageReference Include="System.Text.Json" Version="8.0.5" />
   </ItemGroup>
 
 </Project>