diff --git a/docs/orleans/host/configuration-guide/snippets/serialization/serialization.csproj b/docs/orleans/host/configuration-guide/snippets/serialization/serialization.csproj
index c78ac6149f327..a889c358276de 100644
--- a/docs/orleans/host/configuration-guide/snippets/serialization/serialization.csproj
+++ b/docs/orleans/host/configuration-guide/snippets/serialization/serialization.csproj
@@ -11,6 +11,6 @@
     <PackageReference Include="Microsoft.Orleans.Serialization.MessagePack" Version="10.3.1" />
     <PackageReference Include="Microsoft.Orleans.Persistence.AzureStorage" Version="10.0.0" />
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="10.0.0" />
-    <PackageReference Include="MessagePack" Version="3.1.8" />
+    <PackageReference Include="MessagePack" Version="3.1.9" />
   </ItemGroup>
 </Project>