diff --git a/build/NuSpecs/UmbracoCms.Web.nuspec b/build/NuSpecs/UmbracoCms.Web.nuspec
index b79b909191..5a7a44e80f 100644
--- a/build/NuSpecs/UmbracoCms.Web.nuspec
+++ b/build/NuSpecs/UmbracoCms.Web.nuspec
@@ -37,7 +37,7 @@
             <dependency id="Microsoft.Owin.Host.SystemWeb" version="[4.0.1,4.999999)" />
             <dependency id="Microsoft.Owin.Security.Cookies" version="[4.0.1,4.999999)" />
             <dependency id="Microsoft.Owin.Security.OAuth" version="[4.0.1,4.999999)" />
-            <dependency id="System.Threading.Tasks.Dataflow" version="[4.8.0,4.999999)" />
+            <dependency id="System.Threading.Tasks.Dataflow" version="[4.9.0,4.999999)" />
         </dependencies>
     </metadata>
     <files>
diff --git a/src/Umbraco.Tests/Umbraco.Tests.csproj b/src/Umbraco.Tests/Umbraco.Tests.csproj
index 251718a3b7..8c26e3d532 100644
--- a/src/Umbraco.Tests/Umbraco.Tests.csproj
+++ b/src/Umbraco.Tests/Umbraco.Tests.csproj
@@ -111,7 +111,7 @@
     <PackageReference Include="Semver" Version="2.0.4" />
     <PackageReference Include="SharpZipLib" Version="0.86.0" />
     <PackageReference Include="Umbraco.SqlServerCE" Version="4.0.0.1" />
-    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.4.0" />
+    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.2" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Cache\DistributedCacheBinderTests.cs" />
diff --git a/src/Umbraco.Web/Umbraco.Web.csproj b/src/Umbraco.Web/Umbraco.Web.csproj
index 89432d4d25..8a29df96ff 100755
--- a/src/Umbraco.Web/Umbraco.Web.csproj
+++ b/src/Umbraco.Web/Umbraco.Web.csproj
@@ -85,7 +85,7 @@
     <PackageReference Include="Newtonsoft.Json" Version="12.0.1" />
     <PackageReference Include="NPoco" Version="3.9.4" />
     <PackageReference Include="Semver" Version="2.0.4" />
-    <PackageReference Include="System.Threading.Tasks.Dataflow" Version="4.8.0" />
+    <PackageReference Include="System.Threading.Tasks.Dataflow" Version="4.9.0" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Umbraco.Core\Umbraco.Core.csproj">