diff --git a/src/ReactiveMarbles.CacheDatabase.Settings.Tests/ReactiveMarbles.CacheDatabase.Settings.Tests.csproj b/src/ReactiveMarbles.CacheDatabase.Settings.Tests/ReactiveMarbles.CacheDatabase.Settings.Tests.csproj
index 622b3f4..b055fae 100644
--- a/src/ReactiveMarbles.CacheDatabase.Settings.Tests/ReactiveMarbles.CacheDatabase.Settings.Tests.csproj
+++ b/src/ReactiveMarbles.CacheDatabase.Settings.Tests/ReactiveMarbles.CacheDatabase.Settings.Tests.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
@@ -21,7 +21,7 @@
     </PackageReference>
     <PackageReference Include="FluentAssertions" Version="6.10.0" />
     <PackageReference Include="Microsoft.Reactive.Testing" Version="5.0.0" />
-    <PackageReference Include="ReactiveUI.Testing" Version="18.4.22" />
+    <PackageReference Include="ReactiveUI.Testing" Version="18.4.26" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/ReactiveMarbles.CacheDatabase.Tests/ReactiveMarbles.CacheDatabase.Tests.csproj b/src/ReactiveMarbles.CacheDatabase.Tests/ReactiveMarbles.CacheDatabase.Tests.csproj
index 20f84ec..488badb 100644
--- a/src/ReactiveMarbles.CacheDatabase.Tests/ReactiveMarbles.CacheDatabase.Tests.csproj
+++ b/src/ReactiveMarbles.CacheDatabase.Tests/ReactiveMarbles.CacheDatabase.Tests.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFrameworks>net6.0;net7.0</TargetFrameworks>
@@ -23,7 +23,7 @@
     </PackageReference>
     <PackageReference Include="FluentAssertions" Version="6.10.0" />
     <PackageReference Include="Microsoft.Reactive.Testing" Version="5.0.0" />
-    <PackageReference Include="ReactiveUI.Testing" Version="18.4.22" />
+    <PackageReference Include="ReactiveUI.Testing" Version="18.4.26" />
   </ItemGroup>
 
   <ItemGroup>