diff --git a/src/Host/Client/Impl/Microsoft.R.Host.Client.csproj b/src/Host/Client/Impl/Microsoft.R.Host.Client.csproj
index b8e3fe0bc..eb59b12c1 100644
--- a/src/Host/Client/Impl/Microsoft.R.Host.Client.csproj
+++ b/src/Host/Client/Impl/Microsoft.R.Host.Client.csproj
@@ -19,7 +19,7 @@
     <PackageReference Include="System.Net.Http">
       <Version>4.3.3</Version>
     </PackageReference>
-    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="4.4.0" />
+    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="4.5.4" />
     <PackageReference Include="System.Net.Requests" Version="4.3.0" />
     <PackageReference Include="System.Net.WebSockets" Version="4.3.0" />
     <PackageReference Include="System.Net.WebSockets.Client" Version="4.3.1" />