diff --git a/src/ReactiveMarbles.CacheDatabase.Tests/ReactiveMarbles.CacheDatabase.Tests.csproj b/src/ReactiveMarbles.CacheDatabase.Tests/ReactiveMarbles.CacheDatabase.Tests.csproj
index d70fdf1..ce27f16 100644
--- a/src/ReactiveMarbles.CacheDatabase.Tests/ReactiveMarbles.CacheDatabase.Tests.csproj
+++ b/src/ReactiveMarbles.CacheDatabase.Tests/ReactiveMarbles.CacheDatabase.Tests.csproj
@@ -19,7 +19,7 @@
     </PackageReference>
     <PackageReference Include="FluentAssertions" Version="6.7.0" />
     <PackageReference Include="Microsoft.Reactive.Testing" Version="5.0.0" />
-    <PackageReference Include="ReactiveUI.Testing" Version="18.0.10" />
+    <PackageReference Include="ReactiveUI.Testing" Version="18.1.8" />
   </ItemGroup>
 
   <ItemGroup>