diff --git a/src/Directory.build.props b/src/Directory.build.props
index 3247151d7e..8bb267461b 100644
--- a/src/Directory.build.props
+++ b/src/Directory.build.props
@@ -50,7 +50,7 @@
     <PackageReference Include="FluentAssertions" Version="5.10.3" />
     <PackageReference Include="Microsoft.Reactive.Testing" Version="5.0.0" />
     <PackageReference Include="PublicApiGenerator" Version="10.2.0" />
-    <PackageReference Include="DiffEngine" Version="6.4.8" />
+    <PackageReference Include="DiffEngine" Version="6.4.9" />
     <PackageReference Include="coverlet.msbuild" Version="2.9.0" PrivateAssets="All" />
   </ItemGroup>