diff --git a/Directory.Packages.props b/Directory.Packages.props
index 05a7482d..86941208 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -42,8 +42,8 @@
     <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
     <PackageVersion Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.21.0" />
     <PackageVersion Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="9.0.0" />
-    <PackageVersion Include="ModelContextProtocol" Version="0.3.0-preview.3" />
-    <PackageVersion Include="ModelContextProtocol.AspNetCore" Version="0.3.0-preview.3" />
+    <PackageVersion Include="ModelContextProtocol" Version="0.3.0-preview.4" />
+    <PackageVersion Include="ModelContextProtocol.AspNetCore" Version="0.3.0-preview.4" />
     <PackageVersion Include="Moq" Version="4.20.72" />
     <PackageVersion Include="System.CommandLine" Version="2.0.0-beta6.25358.103" />
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.3" />