diff --git a/samples/csharp_dotnetcore/85.bot-authentication-sni/AuthSNIBot.csproj b/samples/csharp_dotnetcore/85.bot-authentication-sni/AuthSNIBot.csproj
index a2a846376c..b1cd454f0c 100644
--- a/samples/csharp_dotnetcore/85.bot-authentication-sni/AuthSNIBot.csproj
+++ b/samples/csharp_dotnetcore/85.bot-authentication-sni/AuthSNIBot.csproj
@@ -9,8 +9,8 @@
     <PackageReference Include="Azure.Identity" Version="1.10.2" />
     <PackageReference Include="Azure.Security.KeyVault.Certificates" Version="4.5.1" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="6.0.7" />
-    <PackageReference Include="Microsoft.Bot.Builder.Dialogs" Version="4.20.1" />
-    <PackageReference Include="Microsoft.Bot.Builder.Integration.AspNet.Core" Version="4.20.1" />
+    <PackageReference Include="Microsoft.Bot.Builder.Dialogs" Version="4.21.1" />
+    <PackageReference Include="Microsoft.Bot.Builder.Integration.AspNet.Core" Version="4.21.1" />
   </ItemGroup>
 
   <ItemGroup>