diff --git a/Directory.Packages.props b/Directory.Packages.props
index 3d25bff..69ed858 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -63,7 +63,7 @@
 
   <!-- Testing dependencies -->
   <ItemGroup>
-    <PackageVersion Include="Anthropic" Version="12.39.0" />
+    <PackageVersion Include="Anthropic" Version="12.40.0" />
     <PackageVersion Include="Azure.Monitor.OpenTelemetry.AspNetCore" Version="1.6.0" />
     <PackageVersion Include="coverlet.collector" Version="10.0.1">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>