diff --git a/src/FSharp.Control.TaskSeq.Test/FSharp.Control.TaskSeq.Test.fsproj b/src/FSharp.Control.TaskSeq.Test/FSharp.Control.TaskSeq.Test.fsproj
index 0d420cde..e0b962e7 100644
--- a/src/FSharp.Control.TaskSeq.Test/FSharp.Control.TaskSeq.Test.fsproj
+++ b/src/FSharp.Control.TaskSeq.Test/FSharp.Control.TaskSeq.Test.fsproj
@@ -53,7 +53,7 @@
   <ItemGroup>
     <!-- align test project with minimal required version for TaskSeq -->
     <!-- we use 6.0.3 here and not 6.0.2 because TaskResult lib requires it-->
-    <PackageReference Update="FSharp.Core" Version="6.0.3" />
+    <PackageReference Update="FSharp.Core" Version="6.0.1" />
     <PackageReference Include="FsUnit.xUnit" Version="5.5.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
     <PackageReference Include="xunit" Version="2.5.3" />