diff --git a/Xamarin/ReactiveRecyclerView/iOS/TestApp.iOS.csproj b/Xamarin/ReactiveRecyclerView/iOS/TestApp.iOS.csproj
index dfa48b88..b2ca1b90 100644
--- a/Xamarin/ReactiveRecyclerView/iOS/TestApp.iOS.csproj
+++ b/Xamarin/ReactiveRecyclerView/iOS/TestApp.iOS.csproj
@@ -164,7 +164,7 @@
       <Version>8.1.1</Version>
     </PackageReference>
     <PackageReference Include="System.Threading.Tasks.Extensions">
-      <Version>4.5.3</Version>
+      <Version>4.6.3</Version>
     </PackageReference>
     <PackageReference Include="Xam.Plugin.Connectivity">
       <Version>3.2.0</Version>
diff --git a/Xamarin/Timer/Timer/Timer.csproj b/Xamarin/Timer/Timer/Timer.csproj
index 357f51a4..56ea6860 100644
--- a/Xamarin/Timer/Timer/Timer.csproj
+++ b/Xamarin/Timer/Timer/Timer.csproj
@@ -58,7 +58,7 @@
     <PackageReference Include="Splat" Version="7.2.1" />
     <PackageReference Include="System.Reactive" Version="4.1.5" />
     <PackageReference Include="System.Runtime.InteropServices.WindowsRuntime" Version="4.3.0" />
-    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.2" />
+    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.6.3" />
   </ItemGroup>
   <ItemGroup>
     <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Contents.json" />