diff --git a/core/getting-started/unit-testing-with-fsharp-mstest/MathService.Tests/MathService.Tests.fsproj b/core/getting-started/unit-testing-with-fsharp-mstest/MathService.Tests/MathService.Tests.fsproj
index f3808d8bd8f..46b5668a7a4 100644
--- a/core/getting-started/unit-testing-with-fsharp-mstest/MathService.Tests/MathService.Tests.fsproj
+++ b/core/getting-started/unit-testing-with-fsharp-mstest/MathService.Tests/MathService.Tests.fsproj
@@ -12,7 +12,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="MSTest" Version="3.3.1" />
+    <PackageReference Include="MSTest" Version="3.4.1" />
   </ItemGroup>
 
   <ItemGroup>