diff --git a/Sources/Runtime/Microsoft.Psi.Interop/Microsoft.Psi.Interop.csproj b/Sources/Runtime/Microsoft.Psi.Interop/Microsoft.Psi.Interop.csproj
index a222e4249..37528d7eb 100644
--- a/Sources/Runtime/Microsoft.Psi.Interop/Microsoft.Psi.Interop.csproj
+++ b/Sources/Runtime/Microsoft.Psi.Interop/Microsoft.Psi.Interop.csproj
@@ -30,7 +30,7 @@
 
   <ItemGroup>
     <PackageReference Include="CsvHelper" Version="15.0.0" />
-    <PackageReference Include="MessagePack" Version="2.1.90" />
+    <PackageReference Include="MessagePack" Version="2.5.187" />
     <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="8.0.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>