diff --git a/CommsLIB.csproj b/CommsLIB.csproj
index 2532941..416baa8 100644
--- a/CommsLIB.csproj
+++ b/CommsLIB.csproj
@@ -22,7 +22,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="MessagePack" Version="2.2.85" />
+    <PackageReference Include="MessagePack" Version="2.5.187" />
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="5.0.0" />
     <PackageReference Include="protobuf-net" Version="3.0.73" />