diff --git a/src/Camelotia.Presentation/Camelotia.Presentation.csproj b/src/Camelotia.Presentation/Camelotia.Presentation.csproj
index d8126dde..2badbc42 100644
--- a/src/Camelotia.Presentation/Camelotia.Presentation.csproj
+++ b/src/Camelotia.Presentation/Camelotia.Presentation.csproj
@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="ReactiveUI.Fody" Version="18.4.44" />
-    <PackageReference Include="ReactiveUI.Validation" Version="3.1.7" />
+    <PackageReference Include="ReactiveUI.Validation" Version="4.0.9" />
   </ItemGroup>
 
 </Project>