diff --git a/build/ReactiveUI.props b/build/ReactiveUI.props
index 1911c02677..299a91953c 100644
--- a/build/ReactiveUI.props
+++ b/build/ReactiveUI.props
@@ -1,5 +1,5 @@
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
-    <PackageReference Include="ReactiveUI" Version="18.3.1" />
+    <PackageReference Include="ReactiveUI" Version="20.1.1" />
   </ItemGroup>
 </Project>
diff --git a/build/Rx.props b/build/Rx.props
index fde1f80ea1..73b18c6e0b 100644
--- a/build/Rx.props
+++ b/build/Rx.props
@@ -1,5 +1,5 @@
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
-    <PackageReference Include="System.Reactive" Version="5.0" />
+    <PackageReference Include="System.Reactive" Version="6.0.1" />
   </ItemGroup>
 </Project>