diff --git a/samples/ChatWithTools/ChatWithTools.csproj b/samples/ChatWithTools/ChatWithTools.csproj
index 3723185fe..085c34441 100644
--- a/samples/ChatWithTools/ChatWithTools.csproj
+++ b/samples/ChatWithTools/ChatWithTools.csproj
@@ -19,6 +19,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" VersionOverride="10.0.5" />
     <ProjectReference Include="..\..\src\ModelContextProtocol.Core\ModelContextProtocol.Core.csproj" />
   </ItemGroup>
 
diff --git a/samples/QuickstartClient/QuickstartClient.csproj b/samples/QuickstartClient/QuickstartClient.csproj
index 9af83fbd1..02c323b8d 100644
--- a/samples/QuickstartClient/QuickstartClient.csproj
+++ b/samples/QuickstartClient/QuickstartClient.csproj
@@ -18,6 +18,7 @@
 
     <ItemGroup>
         <PackageReference Include="Anthropic" />
+        <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" VersionOverride="10.0.5" />
         <PackageReference Include="Microsoft.Extensions.Hosting" />
         <PackageReference Include="Microsoft.Extensions.AI" />
     </ItemGroup>