diff --git a/src/ReactiveUI.Validation.Tests/ReactiveUI.Validation.Tests.csproj b/src/ReactiveUI.Validation.Tests/ReactiveUI.Validation.Tests.csproj
index 9f2ff952..91286b27 100644
--- a/src/ReactiveUI.Validation.Tests/ReactiveUI.Validation.Tests.csproj
+++ b/src/ReactiveUI.Validation.Tests/ReactiveUI.Validation.Tests.csproj
@@ -23,7 +23,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="DiffEngine" Version="8.0.2" />    
+    <PackageReference Include="DiffEngine" Version="8.1.1" />    
   </ItemGroup>
 
   <ItemGroup>