diff --git a/Rx.NET/Source/tests/Tests.System.Reactive.ApiApprovals/Tests.System.Reactive.ApiApprovals.csproj b/Rx.NET/Source/tests/Tests.System.Reactive.ApiApprovals/Tests.System.Reactive.ApiApprovals.csproj
index 85d6ce1883..c41314c9e0 100644
--- a/Rx.NET/Source/tests/Tests.System.Reactive.ApiApprovals/Tests.System.Reactive.ApiApprovals.csproj
+++ b/Rx.NET/Source/tests/Tests.System.Reactive.ApiApprovals/Tests.System.Reactive.ApiApprovals.csproj
@@ -29,7 +29,7 @@
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     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1" />
-    <PackageReference Include="DiffPlex" Version="1.5.0" />
+    <PackageReference Include="DiffPlex" Version="1.6.0" />
     <PackageReference Include="PublicApiGenerator" Version="10.0.2" />
   </ItemGroup>