diff --git a/MoreDemos/src/CachingSerializer/CachingSerializer/CachingSerializer.csproj b/MoreDemos/src/CachingSerializer/CachingSerializer/CachingSerializer.csproj
index b3c8b83..f927de6 100644
--- a/MoreDemos/src/CachingSerializer/CachingSerializer/CachingSerializer.csproj
+++ b/MoreDemos/src/CachingSerializer/CachingSerializer/CachingSerializer.csproj
@@ -7,7 +7,7 @@
 
   <ItemGroup>
     <PackageReference Include="EnyimMemcachedCore" Version="2.1.0.5" />
-    <PackageReference Include="MessagePack" Version="1.7.3.4" />
+    <PackageReference Include="MessagePack" Version="1.9.3" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="2.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="2.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="2.0.0" />