diff --git a/sample/FSharpStackTrace/FSharpStackTrace.fsproj b/sample/FSharpStackTrace/FSharpStackTrace.fsproj
index 2dfd9a3..7d93cc8 100644
--- a/sample/FSharpStackTrace/FSharpStackTrace.fsproj
+++ b/sample/FSharpStackTrace/FSharpStackTrace.fsproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>netcoreapp3.1</TargetFramework>
+        <TargetFrameworks>netcoreapp3.1;net5.0</TargetFrameworks>
     </PropertyGroup>
 
     <ItemGroup>
@@ -14,7 +14,7 @@
     </ItemGroup>
 
     <ItemGroup>
-      <PackageReference Include="Ply" Version="0.1.7" />
+      <PackageReference Include="Ply" Version="0.3.1" />
     </ItemGroup>
 
 </Project>
diff --git a/sample/FSharpStackTrace/Program.fs b/sample/FSharpStackTrace/Program.fs
index 11659a4..4482eb7 100644
--- a/sample/FSharpStackTrace/Program.fs
+++ b/sample/FSharpStackTrace/Program.fs
@@ -2,8 +2,7 @@
 
 open System
 open System.Diagnostics
-open System.Threading.Tasks
-open FSharp.Control.Tasks.Builders
+open FSharp.Control.Tasks
 
 let call i = async {
     do! Async.Sleep 1