diff --git a/build/Microsoft.Reactive.Testing.props b/build/Microsoft.Reactive.Testing.props
index 777bc4bb53..a0ba2163bb 100644
--- a/build/Microsoft.Reactive.Testing.props
+++ b/build/Microsoft.Reactive.Testing.props
@@ -1,5 +1,5 @@
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
-    <PackageReference Include="Microsoft.Reactive.Testing" Version="4.0.0" />
+    <PackageReference Include="Microsoft.Reactive.Testing" Version="4.1.6" />
   </ItemGroup>
 </Project>